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27
|
13200
|
//============================================================================
// Name : 6.cpp
// Author :
// Version :
// Copyright : Your copyright notice
// Description :
//============================================================================
int main() {
int n=0;
cin>>n;
double a[1000],b[1000],c[1000];
double d[1000];
for (int j=0;j<n;j++)
{
cin>>a[j]>>b[j]>>c[j];
d[j]=b[j]*b[j]-4*a[j]*c[j];
}
for (int i=0;i<n;i++){
if (d[i]>0)
{
cout<<"x1=";
printf("%.5f",(-b[i]+sqrt(d[i]))/(2*a[i]));
cout<<";"<<"x2=";printf("%.5f",(-b[i]-sqrt(d[i]))/(2*a[i]));
cout<<endl;
}
else if (d[i]==0)
{
if (b[i]==0)
{
cout<<"x1=x2=0.00000";
}
else
{
cout<<"x1=x2=";
printf("%.5f",(-b[i])/(2*a[i]));
cout<<endl;
}
}
else
{
if (b[i]==0)
{cout<<"x1=0.00000+";printf("%.5f",sqrt(c[i]/a[i]));cout<<"i;x2=0.00000";printf("%.5f",-sqrt(c[i]/a[i]));cout<<"i"<<endl;}
if (b[i]!=0)
{cout<<"x1=";printf("%.5f",(-b[i])/(2*a[i]));cout<<"+";printf("%.5f",(sqrt(-d[i]))/(2*a[i]));cout<<"i"<<";"<<"x2=";printf("%.5f",(-b[i])/(2*a[i]));cout<<"-";printf("%.5f",(sqrt(-d[i]))/(2*a[i]));cout<<"i"<<endl;}
}}
return 0;
}
|
27
|
13201
|
int main(int argc, char* argv[])
{
int j, n;
scanf("%d\n",&n);
for(j=1;j<=n;j++)
{ float a,b,c;
scanf("%f%f%f",&a,&b,&c);
double x1,x2,m,p;
if ((b*b-4*a*c)>0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a) ;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if ((b*b-4*a*c)==0)
{
x1=x2=-b/(2*a);
printf("x1=x2=%.5f\n",x1,x2);
}
else
{
m=-b/(2*a);
if (b==0)
m=0;
p=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",m,p,m,p);
}
}
}
|
27
|
13202
|
int main()
{
double a , b , c , x1 , x2 ;
int n;
cin >> n;
for(int i = 0; i < n; i++)
{
cin >> a >> b >> c ;
if( b * b - 4 * a * c > 0 )
{
x1 = ( -b + sqrt(b*b-4*a*c) )/( 2*a ) ;
x2 = ( -b - sqrt(b*b-4*a*c) )/( 2*a ) ;
if( x1 == 0 )
x1 = 0;
if( x2 == 0)
x2 = 0;
cout << "x1=" ;
printf("%.5lf", x1 );
cout<< ";" << "x2=" ;
printf("%.5lf\n", x2 );
}
else if( b * b - 4 * a * c == 0)
{
x1 = - b / ( 2*a );
if( x1 == 0 )
x1 = 0;
cout<<"x1=x2=";
printf("%.5lf\n",x1);
}
else
{
double m,n;
m = sqrt( 4 * a * c - b * b )/( 2*a );
n = - b / ( 2*a );
if( b == 0)
n = 0;
cout << "x1=";
printf( "%.5lf", n );
cout << "+";
printf( "%.5lf", m );
cout << "i" << ";" << "x2=" ;
printf( "%.5lf", n );
cout << "-" ;
printf( "%.5lf", m );
cout << "i" << endl;
}
}
return 0;
}
|
27
|
13203
|
int main()
{
double a[100],b[100],c[100],d[100],e[100],f[100];
int n,i;
double *aa,*bb,*cc,*dd,*ee,*ff;
scanf("%d",&n);
aa=a,bb=b,cc=c;
for(i=0;i<n;aa++,bb++,cc++,i++)
scanf("%lf %lf %lf",aa,bb,cc);
aa=a,bb=b,cc=c,dd=d,ee=e,ff=f;
for(i=0;i<n;aa++,bb++,cc++,dd++,ee++,ff++,i++)
{
(*dd)=(*bb)*(*bb)-4*(*aa)*(*cc);
if((*dd)>0)
{
(*ee)=((-(*bb))+sqrt(*dd))/(2*(*aa));
(*ff)=((-(*bb))-sqrt(*dd))/(2*(*aa));
printf("x1=%.5lf;x2=%.5lf\n",*ee,*ff);
}
else if((*dd)==0)
{
(*ee)=0-(*bb)/(2*(*aa));
printf("x1=x2=%.5lf\n",*ee);}
else if((*dd)<0)
{ (*ee)=((*bb)/(2*(*aa)));
(*ff)=(sqrt(0-(*dd)))/(2*(*aa));
printf("x1=-%.5lf+%.5lfi;x2=-%.5lf-%.5lfi\n",*ee,*ff,*ee,*ff);
}
}
}
|
27
|
13204
|
int main()
{
int n,i;
double j,k,p;
double a[100];
double b[100];
double c[100];
double x1[100],x2[100],d[100];
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
p=-b[i]/(2*a[i]);
if(p==-0.00000)
{
p=0.00000;
}
d[i]=b[i]*b[i]-4*a[i]*c[i];
if(d[i]==0)
{
x1[i]=x2[i]=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1[i]);
}
if(d[i]>0)
{
x1[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
if(d[i]<0)
{
j=p;
k=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",j,k,j,k);
}
}
}
|
27
|
13205
|
int main(int argc, char* argv[])
{
double a,b,c,disc,x1,x2,p,q,N,m;
scanf("%lf",&N);
for(m=1;m<=N;m++){
scanf("%lf%lf%lf",&a,&b,&c);
disc=b*b-4*a*c;
if(disc>0){
p=-b/(2*a);
q=sqrt(disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(disc==0){
p=-b/(2*a);
x1=p;
printf("x1=x2=%.5lf\n",x1);
}
else if(disc<0,b/(2*a)==0){
p=b/(2*a);
q=sqrt(-disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
else{
p=-b/(2*a);
q=sqrt(-disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13206
|
float f(double a,double b,double c)
{
double x1,x2,A;
A=b*b-4*a*c;
if(A>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f",x1,x2);
};
if(0==A)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f",x1);
};
if(A<0)
{
double x3,x4;
x1=-b/(2*a);
if(0==x1)
{
x1=0;
}
x3=sqrt(-(b*b-4*a*c)/(4*a*a));
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",x1,x3,x1,x3);
};
return 0;
}
main()
{
double a[20],b[20],c[20];
int i,n,t;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
};
for(i=0;i<n;i++)
{
if(i!=0)
printf("\n");
t=f(a[i],b[i],c[i]);
}
}
|
27
|
13207
|
int main()
{
double a, b, c, d, x1, x2, t;
int i, n;
cin >> n;
for (i = 1; i <= n; i++)
{
cin >> a >> b >> c;
x1 = x2 = t = 0.0;
d = b * b - 4 * a * c;
if (fabs(d) < 1E-6)
{
x1 = -1 * b / (2 * a);
if (fabs (x1) < 1E-6)
x1 = fabs (x1);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
if (d < 0)
{
x1 = -1 * b / (2 * a);
if (fabs (x1) < 1E-6)
x1 = fabs (x1);
t = sqrt (fabs (d)) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << "+" << t << "i;"
<< "x2=" << x1 << "-" << t << "i" << endl;
}
else
{
t = sqrt (d) / (2 * a);
x1 = -1 * b / (2 * a) + t;
x2 = -1 * b / (2 * a) - t;
if (fabs (x1) < 1E-6)
x1 = fabs (x1);
if (fabs (x2) < 1E-6)
x2 = fabs (x2);
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
}
}
return 0;
}
|
27
|
13208
|
int main()
{
int n,i;
double a,b,c;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a),
(-b-sqrt(b*b-4*a*c))/(2*a));
else if(b*b-4*a*c==0)
printf("x1=x2=%.5lf\n",-b/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),
sqrt(4*a*c-b*b)/(2*a),-b/(2*a),sqrt(4*a*c-b*b)/(2*a));
}
return 0;
}
|
27
|
13209
|
int main()
{
int n;
double a,b,c,x1,x2,k;
int i;
scanf ("%d\n",&n);
for (i=0;i<n;i++)
{scanf ("%lf %lf %lf",&a,&b,&c);
k = b * b - 4 * a * c ;
if (k>0){
printf ("x1=%.5f;x2=%.5f\n",(-b+sqrt(k))/(2*a),(-b-sqrt(k))/(2*a));
}
if (k==0){
printf ("x1=x2=%.5f\n",(-b+sqrt(k))/(2*a));
}
if (k<0){
if (b==0) printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",0.0,sqrt(-k)/(2*a),0.0,sqrt(-k)/(2*a));
else printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a),sqrt(-k)/(2*a),(-b)/(2*a),sqrt(-k)/(2*a));
}
}
return 0;
}
|
27
|
13210
|
int main()
{
int n,i;
double a,b,c,x1,x2;
scanf("%d", &n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf", &a, &b, &c);
if(b*b - 4*a*c > 0)
{
x1 = (-b + sqrt(b*b - 4*a*c))/(2*a);
x2 = (-b - sqrt(b*b - 4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(b*b - 4*a*c == 0)
{
x1 = x2 = -b/(2*a);
printf("x1=x2=%.5lf\n", x1);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5f-%.5lfi\n", (0-b)/(2*a), sqrt((4*a*c - b*b))/(2*a), (0-b)/(2*a), sqrt((4*a*c - b*b))/(2*a));
}
}
return 0;
}
|
27
|
13211
|
int main ()
{
int n,m;
scanf ("%d",&n);
double a[100],b[100],c[100],x1[100],x2[100],p[100],r[100],s[100];
for (m=0;m<n;m++)
{
scanf ("%lf %lf %lf\n",&a[m],&b[m],&c[m]);
if (b[m]*b[m]-4*a[m]*c[m]>0)
{
x1[m]=(-b[m] + sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
x2[m]=(-b[m] - sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
}
else if (b[m]*b[m]-4*a[m]*c[m]==0)
{
x1[m]=(-b[m] + sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
x2[m]=(-b[m] - sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
}
else
{
if (b[m]/(2*a[m])==0)
{p[m]=b[m]/(2*a[m]);}
else
{p[m]=-b[m]/(2*a[m]);}
r[m]=sqrt(4*a[m]*c[m]-b[m]*b[m])/(2*a[m]);
s[m]=-sqrt(4*a[m]*c[m]-b[m]*b[m])/(2*a[m]);
}
}
for (m=0;m<n;m++)
{
if (b[m]*b[m]-4*a[m]*c[m]>0)
{
printf ("x1=%.5lf;x2=%.5lf\n",x1[m],x2[m]);
}
else if (b[m]*b[m]-4*a[m]*c[m]==0)
{
printf ("x1=x2=%.5lf\n",x1[m]);
}
else
{
printf ("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",p[m],r[m],p[m],s[m]);
}
}
return 0;
}
|
27
|
13212
|
int main ()
{
int n;
double a,b,c,x1,x2;
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else if(b*b-4*a*c==0)
{
x1=x2=-(b/(2*a));
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
double m,n;
m=-(b/(2*a));
n=sqrt(4*a*c-b*b)/(2*a);
if(m==0)
m=-m;
cout<<fixed<<setprecision(5)<<"x1="<<m<<"+"<<n<<"i"<<";"<<"x2="<<m<<"-"<<n<<"i"<<endl;
}
}
return 0;
}
|
27
|
13213
|
int main(){
double a[101],b[101],c[101],d,x1,x2;
int j,n;
a[0]=0,b[0]=0,c[0]=0,d=0;
cin >> n;
for(j=1;j<=n;j=j+1)
{
cin >>a[j]>>b[j]>>c[j];
if(b[j]*b[j] -a[j]*c[j]*4 > 0)
{
x1 =(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2 = (-b[j] - sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
cout <<"x1=";
printf("%.5f",x1);
cout<<";x2=";
printf("%.5f",x2);
cout<<endl;
}
else if(b[j]*b[j] -a[j]*c[j] *4 == 0)
{
x1 =(-b[j] )/(2*a[j]);
cout <<"x1=x2=";
printf("%.5f",x1);
cout<<endl;
}
else if(b[j]*b[j] -a[j]*c[j] *4 < 0)
{
x1 =(-b[j] )/(2*a[j]);
if (x1>-0.00001&&x1<0.00001)
{
x1 =0;
}
d =(sqrt(4*a[j]*c[j]-b[j]*b[j]))/(2*a[j]);
cout <<"x1=";
printf("%.5f",x1);
cout<<"+";
printf("%.5f",d);
cout <<"i;x2=";
printf("%.5f",x1);
cout<<"-";
printf("%.5f",d);
cout<<"i" <<endl;
}
x1=0;
x2=0;
d =0;
}
return 0;
}
|
27
|
13214
|
int main(int argc, char* argv[])
{
int n,i;
float a[100],b[100],c[100];
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++){
if(a[i]!=0){
double dt,m,n,x1,x2;
dt=b[i]*b[i]-4*a[i]*c[i];
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(dt))/(2*a[i]);
if(dt==0){
printf("x1=x2=%.5f\n",m);
}
else if(dt>0){
x1=m+n;
x2=m-n;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else{
printf("x1=%.5f+%.5fi;",m,n);
printf("x2=%.5f-%.5fi\n",m,n);
}
}
}
return 0;
}
|
27
|
13215
|
int main(int argc, char* argv[])
{
int n,i;
double a[100],b[100],c[100];
double x1[100],x2[100];
double d,e,f;
scanf ("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
d=(-1)*b[i]/(2*a[i]);
e=b[i]*b[i]-4*a[i]*c[i];
if (e>0)
{
x1[i]=d+sqrt(e)/(2*a[i]);
x2[i]=d-sqrt(e)/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
if(e==0)
{
x1[i]=d;
x2[i]=d;
printf("x1=x2=%.5lf\n",x1[i]);
}
if (e<0)
{
e=(-1)*e;
f=sqrt(e)/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,f,d,f);
}
}
return 0;
}
|
27
|
13216
|
int main()
{
int n;
scanf("%d",&n);
int i;
double a,b,c;
double t;
double p,q;
double x1,x2;
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
t=b*b-4*a*c;
if(t>0)
{
if (b==0)
{
x1=(sqrt(t))/(2*a);
x2=(- sqrt(t))/(2*a);
}
else
{
x1=(-b+sqrt(t))/(2*a);
x2=(-b - sqrt(t))/(2*a);
}
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (t==0)
{
if(b==0)
{
x1=x2=0;
}
else x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
if (b==0)
{
p=0.00000;
}
else p=-b/(a*2);
q=sqrt(-t)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
/*????:
1."if??\else if??\else" ??
2.t==0 not t=0*/
|
27
|
13217
|
main()
{
int n;
double a,b,c;
double x1,x2;
double Delta;
scanf("%d\n",&n);
for(int i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
Delta =(b*b-4*a*c);
if (Delta>0)
{x1 = (-b + sqrt(Delta))/(2*a);
x2 = (-b - sqrt(Delta))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if (fabs(Delta)<1e-7)
{x1 = (-b )/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{x1 = (-b + sqrt(-Delta))/(2*a);
x2 = (-b - sqrt(-Delta))/(2*a) ;
if(fabs(b)<1e-7)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(b/(2*a)),(sqrt(4*a*c-b*b)/(2*a)),(b/(2*a)),(sqrt(4*a*c-b*b)/(2*a)));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b/(2*a)),(sqrt(4*a*c-b*b)/(2*a)),(-b/(2*a)),(sqrt(4*a*c-b*b)/(2*a)));
}
}
}
|
27
|
13218
|
main()
{
int n, i;
/*n = 0;*/
scanf("%d",&n);
float a[100],b[100],c[100];
double x1, x2;
for (i=1; i<=n; i++)
{
scanf("%f %f %f",&a[i-1], &b[i-1], &c[i-1]);
}
for (i=1; i<=n; i++)
{
if ((b[i-1]*b[i-1]-4*a[i-1]*c[i-1])>0)
{
x1 = (-b[i-1] + sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
x2 = (-b[i-1] - sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if ((b[i-1]*b[i-1]-4*a[i-1]*c[i-1]) == 0)
{
x1 = (-b[i-1] + sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
x2 = (-b[i-1] - sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
printf("x1=x2=%.5f\n",x1);
}
else if ((b[i-1]*b[i-1]-4*a[i-1]*c[i-1]) < 0)
{
double i1,i2;
i1 = sqrt(-b[i-1]*b[i-1]+4*a[i-1]*c[i-1])/(2*a[i-1]);
i2 = -b[i-1]/(2*a[i-1]);
if (i2 == -0.00000)
{
i2 = 0.00000;
}
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",i2,i1,i2,i1);
}
}
}
|
27
|
13219
|
int main()
{
double a,b,c,d;
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a>>b>>c;
d=b*b-4*a*c;
if(d>0)
{
cout<<fixed<<setprecision(5)<<"x1="<<((-b)+sqrt(d))/(2*a)<<";"<<"x2="<<((-b)-sqrt(d))/(2*a)<<endl;
}
else if(d==0)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b)/(2*a)<<endl;
}
else
{
if(b==0)
{
cout<<fixed<<setprecision(5)<<"x1="<<b/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i"<<";"<<"x2="<<b/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i"<<";"<<"x2="<<(-b)/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13220
|
int main()
{
int n;
float a,b,c;
cin>>n;
for(n;n>0;n--)
{
cin>>a>>b>>c;
double m=-b/(2*a);
double deta=b*b-4*a*c;
if (m==-0)
m=0;
if(deta>1e-8)
cout<<"x1="<<fixed<<setprecision(5)<<m+sqrt(deta)/(2*a)
<<";x2="<<m-sqrt(deta)/(2*a)<<endl;
else if(deta<=-1e-8)
cout<<"x1="<<fixed<<setprecision(5)<<m<<"+"<<fabs(sqrt(-deta)/(2*a))<<"i"
<<";x2="<<m<<"-"<<fabs(sqrt(-deta)/(2*a))<<"i"<<endl;
else
cout<<fixed<<setprecision(5)<<"x1=x2="<<m<<endl;
}
return 0;
}
|
27
|
13221
|
int main()
{
int n,m;
scanf("%d",&n);
double a[500],b[500],c[500],x1,x2,e;
for(m=1;m<=n;m++)
{
scanf("%lf %lf %lf",&a[m],&b[m],&c[m]);
}
for(m=1;m<=n;m++)
{
if((b[m]*b[m]-4*a[m]*c[m])==0)
{
x1=-b[m]/(2*a[m]),x2=-b[m]/(2*a[m]);
printf("x1=x2=%.5f\n",x1);
}
else if((b[m]*b[m]-4*a[m]*c[m])>0)
{
x1=(-b[m]+sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
x2=(-b[m]-sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
e=sqrt(-b[m]*b[m]+4*a[m]*c[m])/(2*a[m]);
if(b[m]==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",e,e);
else
{
x1=-b[m]/(2*a[m]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,e,x1,e);
}
}
}
return 0;
}
|
27
|
13222
|
int main(int argc, char* argv[])
{
int n,i;
scanf("%d\n",&n);
for(i=1;i<=n;i++){
double a,b,c,x1,x2;
scanf("%lf %lf %lf",&a,&b,&c);
double d=b*b-4*a*c;
if(d>0){
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if(d==0){
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);}
else{
if(b!=0){
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);}
else{
x1=b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);}
}
}
return 0;
}
|
27
|
13223
|
int main()
{
float a,b,c,n,p,q,l;
scanf("%f",&n);
float i=1;
while (i<=n)
{
scanf ("%f %f %f\n",&a,&b,&c);
l=b*b-4*a*c;
if (b!=0)
p=-b/(2*a);
else
p=b/(2*a);
if (l<0)
{
q=sqrt(-l)/(2*a);
printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
else
{
q=sqrt(l)/(2*a);
if (p+q==p-q)
printf ("x1=x2=%.5f\n",p);
else
printf ("x1=%.5f;x2=%.5f\n",(p+q),(p-q));
}
i++;
}
}
|
27
|
13224
|
int main()
{
int n,t;
scanf("%d",&n);
for(t=0;t<n;t++)
{
float a,b,c;
double p,q,k,x1,x2;
scanf("%f %f %f\n",&a,&b,&c);
if(b*b-4*a*c<0)
{
k=sqrt(-b*b+4*a*c);
p=-b/(2*a);q=k/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
else
{
k=sqrt(b*b-4*a*c);
p=-b/(2*a);q=k/(2*a);
x1=p+q;x2=p-q;
if(q==0.0)
printf("x1=x2=%.5f\n",p);
else
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
}
return 0;
}
|
27
|
13225
|
int main()
{
int n,k;
float a,b,c;
double x1,x2,t,Re,Im;
cin >> n;
for (k = 1; k <= n; k++)
{
cin >> a >> b >> c;
t = b * b - 4 * a * c;
Re = -b / (2 * a);
Im = sqrt(fabs(t)) / (2 * a);
if (t > 0)
{
x1 = Re + Im;
x2 = Re - Im;
if (fabs(x1) <= 1e-5)
{
x1 = 0;
}
else if (fabs(x2) <= 1e-5)
{
x2 = 0;
}
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else if (t == 0)
{
if (fabs(Re) <= 1e-5)
{
x1 = 0;
}
else
{
x1 = Re;
}
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
if (fabs(Re) <= 1e-5)
{
Re = 0;
}
cout << fixed << setprecision(5) << "x1=" << Re << "+" << Im << "i;x2=" << Re << "-" << Im << "i" << endl;
}
}
return 0;
}
|
27
|
13226
|
int main()
{
int n;
double a, b, c, delta ;//delta ????
double x1, x2, x1i, x2i ;//??x1i,x2i
cin>>n;
for( int i=1 ; i<=n ; i++ )
{
cin>>a>>b>>c ;
delta=b*b-4*a*c ;
if( delta>0 )
{
x1 = ( -b + sqrt( delta ) ) / ( 2*a ) ;
x2 = ( -b - sqrt( delta ) ) / ( 2*a ) ;
cout << fixed << setprecision(5)
<< "x1=" << ( ( abs( x1 )<10e-5 )? 0:x1) << ";"
<< "x2=" << ( ( abs( x2 )<10e-5 )? 0:x2) <<'\n' ;
}
else if( delta==0 )//??delta=0 ?????
{
x1 = x2 = -b / ( 2*a ) ;
cout<< fixed << setprecision(5) << "x1=x2=" << ( ( abs ( x1 )<10e-5 )? 0:x1) <<endl ;
}
else//delta<0?????
{
x1 = -b / ( 2*a ) ;
x2 = -b / ( 2*a ) ;
x1i = sqrt( -delta ) / ( 2*a ) ;
x2i = sqrt( -delta ) / ( 2*a ) ;
cout<< fixed << setprecision(5)
<< "x1=" << ( ( abs ( x1 )<10e-5 )? 0:x1) << "+" << x1i << "i" << ";"
<< "x2=" << ( ( abs ( x1 )<10e-5 )? 0:x1) << "-" << x2i << "i" <<endl ;
}
}
return 0;
}
|
27
|
13227
|
int main()
{
int n,m,k;
double d,e,f;
scanf("%d\n",&n);
double a[n],b[n],c[n];
for(m=0;m<n;m++)
{
scanf("%lf %lf %lf\n",&a[m],&b[m],&c[m]);
}
for(k=0;k<n;k++)
{ d=b[k]*b[k]-4*a[k]*c[k];
if(d>0)
{
e=(-b[k]+sqrt(d))/(2*a[k]);
f=(-b[k]-sqrt(d))/(2*a[k]);
printf("x1=%.5lf;x2=%.5lf\n",e,f);
}
else if(d==0)
{
e=(-b[k])/(2*a[k]);
printf("x1=x2=%.5lf\n",e);
}
else if(d<0)
{
e=(-b[k])/(2*a[k]);
f=sqrt(-d)/(2*a[k]);
if(b[k]==0)
{printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",f,f);}
else
{printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,f,e,f);}
}
}
return 0;
}
|
27
|
13228
|
int main() //???
{ //?????
int n,i;
double a,b,c,x1,x2,d,p,q; //????
cin>>n;
for(i=0;i<n;i++) //n???
{ //????
cin>>a>>b>>c; //?? a,b,c
d=b*b-4*a*c;
p=-b/(2*a);
q=sqrt(abs(d)); //?????????
if(d<0) //? d<0
{ //?? d ? 0 ?????
cout<<fixed<<setprecision(5)<<"x1="<<p+1-1<<"+"<<q/(2*a)<<"i"
<<";"<<"x2="<<p+1-1<<"-"<<q/(2*a)<<"i"<<endl;
}
else
{
if(d==0) //? d=0
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<p+1-1<<endl;
}
else //? d>0
{
cout<<fixed<<setprecision(5)<<"x1="<<p+1-1+q/(2*a)<<";"<<"x2="<<p+1-1-q/(2*a)<<endl;
}
}
}
return 0;
} //?????
|
27
|
13229
|
int main(int argc, char* argv[])
{int n,i;
double a,b,c,d,x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
d=-4*a*c+b*b;
if(d>0)
{x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if(d==0)
{x1=(-b+sqrt(d))/(2*a);
printf("x1=x2=%.5lf\n",x1);}
else
{printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",(-b)/(2*a),
sqrt(-d)/(2*a),(-b)/(2*a),sqrt(-d)/(2*a));}}
return 0;
}
|
27
|
13230
|
int main(int argc, char* argv[])
{
int n,i;
double a,b,c,x1,x2,delt,xr,xc;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
delt=b*b-4*a*c;
if(delt>0)
{
x1 = (-b + sqrt(delt))/(2*a);
x2 = (-b - sqrt(delt))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(delt==0)
{
x1 = (-b + sqrt(delt))/(2*a);
x2 = (-b - sqrt(delt))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
xr=-b/(2*a);
xc=sqrt(-b*b+4*a*c)/(2*a);
if(b!=0)
{printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",xr,xc,xr,xc);}
else
{printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",xc,xc);}
}
}
return 0;
}
|
27
|
13231
|
int main()
{
double a[10000],b[10000],c[10000],d[10000][2];
int i,j,n;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a[i]>>b[i]>>c[i];
if(a[i]<0)
{
a[i]=-a[i],b[i]=-b[i],c[i]=-c[i];
if(b[i]*b[i]-4*a[i]*c[i]>=0)
{
d[i][0]=(-b[i])/(2*a[i]);
d[i][1]=(sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
d[i][0]=(-b[i])/(2*a[i]);
d[i][1]=(sqrt(-b[i]*b[i]+4*a[i]*c[i]))/(2*a[i]);
}
}
if(a[i]>0)
{
if(b[i]*b[i]-4*a[i]*c[i]>=0)
{
d[i][0]=(-b[i])/(2*a[i]);
d[i][1]=(sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
d[i][0]=(-b[i])/(2*a[i]);
d[i][1]=(sqrt(-b[i]*b[i]+4*a[i]*c[i]))/(2*a[i]);
}
}
}
for(j=1;j<=n;j++)
{
if(b[j]*b[j]-4*a[j]*c[j]>0)
cout<<fixed<<setprecision(5)<<"x1="<<d[j][0]+d[j][1]<<";x2="<<d[j][0]-d[j][1]<<endl;
if(b[j]*b[j]-4*a[j]*c[j]==0)
cout<<fixed<<setprecision(5)<<"x1=x2="<<d[j][0]<<endl;
if(b[j]*b[j]-4*a[j]*c[j]<0)
cout<<fixed<<setprecision(5)<<"x1="<<d[j][0]<<"+"<<d[j][1]<<"i;x2="<<d[j][0]<<"-"<<d[j][1]<<"i"<<endl;
}
return 0;
}
|
27
|
13232
|
int main()
{
int i,n;
double a,b,c,x1,x2,y,z;
scanf ("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
y=b*b-4*a*c;
if (a==0)
printf ("error\n");
else
{
if (b==0)
{ if (y>0)
{x1=(sqrt(b*b-4*a*c))/(2*a);
x2=(sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{if(y==0)
{x1=(sqrt(b*b-4*a*c))/(2*a);
x2=(sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);}
else
{z=sqrt(-y)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,z,b,z);}
}
}
else
{if (y>0)
{x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{if(y==0)
{x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);}
else
{x1=(-b)/(2*a);
x2=(-b)/(2*a);
z=sqrt(-y)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,z,x2,z);}
}
}
} }
return 0;
}
|
27
|
13233
|
int main()
{
int n,e;
double a,b,c,x1,x2,f,g;
scanf("%d",&n);
for(e=1;e<=n;e++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if((b*b)>(4*a*c))
{x1=(0-b + sqrt(b*b-4*a*c))/(2*a);
x2=(0-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else if((b*b)<(4*a*c))
{f=(0-b)/(2*a);
g=(sqrt((4*a*c)-(b*b)))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",f,g,f,g);
}
else
{ x1=(0-b + (sqrt((b*b)-(4*a*c))))/(2*a);
printf("x1=x2=%.5f\n",x1);}
}
}
|
27
|
13234
|
/**
* @file homework.cpp
* @author ???
* @date 2011-09-27
* @description
* ??????: ?????????
*/
int main()
{
int n,k;double a,b,c,x,y; // ???????a,b,c??????x,y
cin >> n; // n????????
for(k=0;k<n;k++) // ?????
{
cin>>a>>b>>c; // ?????
if(b * b - 4 * a * c>0)
{
x = (- b + sqrt(b * b - 4 * a * c))/(2 * a);
y = (- b - sqrt(b * b - 4 * a * c))/(2 * a); // ?????????????
if(x==-0.00000) x=0.00000; if(y==-0.00000) y=0.00000; // ?????-0.00000???
cout<<fixed<<setprecision(5)<<"x1="<<x<<";x2="<<y<<endl;
}
else if(b * b - 4 * a * c == 0)
{
x = (- b)/(2 * a); // ?????
if(x == -0.00000) x = 0.00000; if(y == -0.00000) y = 0.00000;
cout<<fixed<<setprecision(5)<<"x1=x2="<<x<<endl;
}
else
{
x = (- b)/(2 * a);y = (sqrt(4 * a * c - b * b))/(2 * a); // ?????
if(x == -0.00000) x = 0.00000; if(y == -0.00000) y = 0.00000;
cout<<fixed<<setprecision(5)<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
}
return 0;
}
|
27
|
13235
|
int main()
{
int n,i;
double a ,b ,c;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
if(sqrt(b*b-4*a*c)>0)
cout<<fixed<<setprecision(5)<<"x1="<<(-b+1-1 + sqrt(b*b-4*a*c))/(2*a)<<";x2="<<(-b+1-1- sqrt(b*b-4*a*c))/(2*a)<<endl;
else if(sqrt(b*b-4*a*c)==0)
cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b +1-1+ sqrt(b*b-4*a*c))/(2*a)<<endl;
else
cout<<fixed<<setprecision(5)<<"x1="<<(-b+1-1)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i;x2="<<(-b+1-1)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
return 0;
}
|
27
|
13236
|
int main()
{
int i,n;
double a,b,c,x1,x2;
cin>>n;
for(i=1;i<=n;i=i+1)
{
cin>>a>>b>>c;
if((b*b-4*a*c)>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if((b*b-4*a*c)==0)
{
x1 = x2 = (-b )/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
x1 = (-b)/(2*a);
if (abs(x1)<0.00001) x1=0;
x2 = (sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13237
|
int main()
{
int n,i;
double a,b,c,x[100][5],dt;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
dt=b*b-4*a*c;
if(dt>0.0)
{
x[i][0]=1;
x[i][1]=(-b + sqrt(dt))/(2*a);
x[i][2]=(-b - sqrt(dt))/(2*a);
}
else if(dt==0)
{
x[i][0]=2;
x[i][1]=(-b)/(2*a);
}
else
{
x[i][0]=3;
x[i][1]=(-b)/(2*a);
x[i][3]=(sqrt(-dt))/(2*a);
x[i][2]=(-b)/(2*a);
x[i][4]=(sqrt(-dt))/(2*a);
}
}
for(i=0;i<n;i++)
{
if(x[i][0]==1)
{
printf("x1=%.5f;x2=%.5f\n",x[i][1],x[i][2]);
}
else if(x[i][0]==2)
{
printf("x1=x2=%.5f\n",x[i][1]);
}
else if(x[i][0]==3)
{
if(x[i][1]==-0.0)
x[i][1]=0.0;
if(x[i][2]==-0.0)
x[i][2]=0.0;
printf("x1=%.5f+%.5f",x[i][1],x[i][3],x[i][2],x[i][4]);
printf("i;x2=%.5f-%.5f",x[i][2],x[i][4]);
printf("i\n");
}
}
return 0;
}
|
27
|
13238
|
int main()
{
double a,b,c,x1,x2,x3,decision;
int n,i,j;
scanf("%d",&n);
for(i=1;i<=n;i++)
{ scanf("%lf%lf%lf",&a,&b,&c);
decision=b*b-4*a*c;
if (decision==0)
printf("x1=x2=%.5lf\n",(-1)*b/(2*a));
if (decision>0)
{
x1 = ((-1)*b + sqrt(b*b-4*a*c))/(2*a);
x2 = ((-1)*b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if (decision<0)
{x1=(-1)*b/(2*a);
x3=sqrt((-1)*decision)/(2*a);
if ((x1<0.001) &&((-1)*x1<0.001))
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",x3,x3);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x3,x1,x3);
}
}
}
|
27
|
13239
|
int main(){
int n;
scanf("%d",&n);
int j;
for(j=1;j<=n;j++){
double a1,b1,c1,x1,x2,m;
scanf("%lf%lf%lf",&a1,&b1,&c1);
m=b1*b1-4*a1*c1;
if(m>0){
x1 = (-b1 + sqrt(b1*b1-4*a1*c1))/(2*a1);
x2 = (-b1 - sqrt(b1*b1-4*a1*c1))/(2*a1);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
if(m==0){
x1=(-b1)/(2*a1);
printf("x1=x2=%.5f\n",x1);}
if(m<0){
double y1,y2;
y1 = (-b1)/(2*a1);
y2 = (sqrt(-m))/(2*a1);
if(b1==0.00000){
printf("x1=%.5f+%.5fi;",-y1,y2);
printf("x2=%.5f-%.5fi\n",-y1,y2);}
else{ printf("x1=%.5f+%.5fi;",y1,y2);
printf("x2=%.5f-%.5fi\n",y1,y2);}
}
}
return 0;
}
|
27
|
13240
|
main()
{
float m[100][3];
double x1,x2,delt,a,b,c,s,t;
int n,i,j;
scanf("%d",&n);
for(i=0;i<=n-1;i++)
{
for(j=0;j<=2;j++)
{
scanf("%f",&m[i][j]);
}
}
for(i=0;i<=n-1;i++)
{
a=(double)m[i][0];
b=(double)m[i][1];
c=(double)m[i][2];
delt=(double)(b*b-4*a*c);
if(delt>0)
{
x1 = (-b+1+sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
x2 = (-b+1-sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(delt==0)
{
x1 = (-b+1+sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
x2 = (-b+1-sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if(delt<0)
{
s=((-b+1)/(2*a))-1/(2*a);
t=(sqrt(4*a*c-b*b)/(2*a));
printf("x1=%.5f+%.5fi;x2=%.5f%.5fi\n",s,t,s,-t);
}
}
}
|
27
|
13241
|
int main(int argc, char *argv[])
{
int n,i;
double a,b,c;
scanf("%d",&n);
for(i=1;i<=n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>=0.00001)
printf("x1=%.5f;x2=%.5f",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
else if(b*b-4*a*c<=-0.00001&&b!=0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",-b/(2*a),sqrt(4*a*c-b*b)/(2*a),-b/(2*a),sqrt(4*a*c-b*b)/(2*a));
else if(b*b-4*a*c<=-0.00001&&b==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi",sqrt(4*a*c)/(2*a),sqrt(4*a*c)/(2*a));
else printf("x1=x2=%.5f",-b/(2*a));
if(i!=n) printf("\n");
}
return 0;
}
|
27
|
13242
|
void main()
{
double a[32768],b[32768],c[32768];
int n,i;
double d,x1,x2,e;
scanf("%d",&n);
for(i=1;i<=n;i++)
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
for(i=1;i<=n;i++)
{
if (fabs(a[i])<1e-16)
printf("Wrong\n");
else
{
d=b[i]*b[i]-4*a[i]*c[i];
if (fabs(d)<1e-16)
{
x1=-b[i]/(2*a[i]);
x2=-b[i]/(2*a[i]);
if (fabs(x1)<5e-6) x1=0;
if (fabs(x2)<5e-6) x2=0;
printf("x1=x2=%.5f\n",x1);
}
else if (d>=1e-16)
{
x1=(-b[i]+sqrt(d))/(2*a[i]);
x2=(-b[i]-sqrt(d))/(2*a[i]);
if (fabs(x1)<5e-6) x1=0;
if (fabs(x2)<5e-6) x2=0;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
x1=-b[i]/(2*a[i]);
x2=-b[i]/(2*a[i]);
if (fabs(x1)<5e-6) x1=0;
if (fabs(x2)<5e-6) x2=0;
e=sqrt(-d)/(2*a[i]);
if (fabs(e)<5e-6) printf("x1=x2=%.5f\n",x1);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,e,x2,e);
}
}
}
}
|
27
|
13243
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
double x1,x2;
float a[N],b[N],c[N];
int i;
for(i=0;i<n;i++)
{
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
if(a!=0)
{ double m,n,p;
m=(-b[i])/(2*a[i]);
n=sqrt((b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
p=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1=m+n;
x2=m-n;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b[i]*b[i]-4*a[i]*c[i]==0)
{
printf("x1=x2=%.5f\n",m);
}else
{
printf("x1=%.5f+%.5fi;",m,p);
printf("x2=%.5f-%.5fi\n",m,p);
}
}
}
return 0;
}
|
27
|
13244
|
double a,b,c,x1,x2,d;
int n,i;
double test(double p)
{
if((p-0<0.000000001)&&(0-p<0.000000001)) return 0;
else return p;
}
void doit()
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
d=test(d);
if((d-0<0.000000001)&&(0-d<0.000000001))
{
x1=-b/(2*a);
x1=test(x1);
printf("x1=x2=%.5f\n",x1);
return ;
}
if(d>0)
{
x1=(-b+sqrt(d))/(2*a);
x1=test(x1);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
return ;
}
if(d<0)
{
x1=-b/(2*a);
x1=test(x1);
x2=sqrt(-d)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
return ;
}
}
int main()
{
scanf("%d",&n);
for(i=1;i<=n;i++)
doit();
return 0;
}
|
27
|
13245
|
main()
{
int n,i;
float a,b,c,m,x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a,&b,&c);
m=b*b-4*a*c;
if(m==0) printf("x1=x2=%.5f\n",(-b)/(2*a));
else if(m>0)
{//x1=((-b) + sqrt(b*b-4*a*c))/(2*a);
//x2 = ((-b) - sqrt(b*b-4*a*c))/(2*a);
//printf("x1=%.5f;x2=%.5f\n",x1,x2);
printf("x1=%.5f;x2=%.5f\n",((-b) + sqrt(b*b-4*a*c))/(2*a),((-b) - sqrt(b*b-4*a*c))/(2*a));
}
else
{
if(b==0) printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",sqrt(-m)/(2*a),sqrt(-m)/(2*a));
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-m)/(2*a),-b/(2*a),sqrt(-m)/(2*a)); }
}
}
|
27
|
13246
|
int main()
{
double a,b,c,delta,m,n;
int i = 0;
scanf("%d",&i);
while(i--)
{
scanf("%lf%lf%lf",&a,&b,&c);
delta=b*b-4*a*c;
if(delta<0)
{
m=-b/2/a;
n=sqrt(-delta)/2/a;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
else
if(delta==0)
{
m=-b/2/a;
printf("x1=x2=%.5lf\n",m);
}
else
{
m=-b/2/a;
n=sqrt(delta)/2/a;
printf("x1=%.5lf;x2=%.5lf\n",m+n,m-n);
}
}
return 0;
}
|
27
|
13247
|
int main()
{
int n,i;
double t = 0.00001;
float a,b,c;
double x1,x2;
double j,w;
double delta;
scanf("%d",&n);
for (i = 0; i < n; i++)
{
a = b = c = 0;
delta = 0;
x1 = x2 = 0;
j = w = 0;
scanf("%f %f %f",&a,&b,&c);
delta = b * b - 4 * a * c;
if (abs(delta) < t)
{
x1 = - b / (2 * a);
printf("x1=x2=%.5f\n",x1);
}
else if(delta > 0)
{
x1 = (-b + sqrt(delta))/(2 * a);
x2 = (-b - sqrt(delta))/(2 * a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
w = -b / (2 * a);
if(w < t && w > -t)
w = 0;
j = sqrt(-delta)/ (2 * a);
if(j > 0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",w,j,w,j);
else
{
j = -j;
printf("x1=%.5f-%.5fi;x2=%.5f+%.5fi\n",w,j,w,j);
}
}
}
return 0;
}
|
27
|
13248
|
int main()
{
#define i
int n,k;
float a,b,c;
scanf("%d",&n);
for (k=0;k<n;k++)
{
scanf("%f%f%f",&a,&b,&c);
if (b!=0)
{
if (b*b==4*a*c)
printf("x1=x2=%.5lf\n",-b/2/a);
else if (b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/2/a,sqrt(4*a*c-b*b)/(2*a),-b/2/a,sqrt(4*a*c-b*b)/(2*a));
}
else
{
if (a*c<0)
printf("x1=0.00000+%.5lf;x2=0.00000+%.5lf\n",(sqrt(b*b-4*a*c))/(2*a),(-sqrt(b*b-4*a*c))/(2*a));
if (a*c>0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(4*a*c-b*b)/2/a,sqrt(4*a*c)/2/a);
}
}
return 0;
}
|
27
|
13249
|
void main()
{
int n,i;
double a[100],b[100],c[100],x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b[i]*b[i]-4*a[i]*c[i]==0)
{
x1=x2=(-b[i])/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=(-b[i])/(2*a[i]);
x2=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13250
|
main()
{
int n,i,j;
double s,c,d,e;
float t;
scanf("%d",&n);
float a[n][3];
for(i=0;i<=(n-1);i++)
{
for(j=0;j<=2;j++)
{
scanf("%f",&t);
a[i][j]=t;
}
}
for(i=0;i<=(n-1);i++)
{
s=a[i][1]*a[i][1]-4*a[i][0]*a[i][2];
if(s>1e-6)
{
c = (-a[i][1] + sqrt(s))/(2*a[i][0]);
d = (-a[i][1] - sqrt(s))/(2*a[i][0]);
if(fabs(c)<1e-6)c=0.00000;
if(fabs(d)<1e-6)c=0.00000;
printf("x1=%0.5f;x2=%0.5f\n",c,d);
}
else if(fabs(s)<1e-6)
{
c=-a[i][1]/(2*a[i][0]);
if(fabs(c)<1e-6)c=0.00000;
printf("x1=x2=%.5f\n",c);
}
else
{
c=sqrt(-s)/(2*a[i][0]);
if(fabs(a[i][1])>1e-6)d=-a[i][1]/(2*a[i][0]);
else d=0.00000;
if(c<1e-6)printf("x1=%.5f%.5fi;x2=%.5f+%.5fi\n",d,c,d,-c);
else printf("x1=%.5f+%.5fi;x2=%.5f%.5fi\n",d,c,d,-c);
}
}
getchar();
getchar();
getchar();
getchar();
}
|
27
|
13251
|
/*
* hw20130925(7.cpp
*
* Created on: 2013-9-28
* Author: KyLin
*/
int main ()
{
int n1; //???????
cin>>n1;
const int n=n1;
int t;
double deta;
double a[n],b[n],c[n]; //a,b,c????x1?x2???real????imag???,deta????
double x1[n],x2[n];
double real[n],imag[n];
for (t=0;t<n;++t)
a[t]=b[t]=c[t]=x1[t]=x2[t]=real[t]=imag[t]=0; //??????
for (t=0;t<n;++t)
cin>>a[t]>>b[t]>>c[t];
for (t=0;t<n;++t)
{
deta=b[t]*b[t]-4*a[t]*c[t];
if (deta>0) //????deta??????
{
x1[t]=(-b[t]+sqrt(deta))/(2*a[t]);
x2[t]=(-b[t]-sqrt(deta))/(2*a[t]);
cout<<fixed<<setprecision(5)<<"x1="<<x1[t]<<";x2="<<x2[t]<<endl;
}
if (deta==0)
{
x1[t]=(-b[t])/(2*a[t]);
x2[t]=x1[t];
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1[t]<<endl;
}
if (deta<0)
{
real[t]=(-b[t])/(2*a[t]);
imag[t]=sqrt(abs(deta))/(2*a[t]);
if (real[t]==0)
{
cout<<fixed<<setprecision(5)<<"x1="<<abs(real[t])<<"+"<<imag[t]<<"i;x2="<<abs(real[t])<<-imag[t]<<"i"<<endl;
}
else
cout<<fixed<<setprecision(5)<<"x1="<<real[t]<<"+"<<imag[t]<<"i;x2="<<real[t]<<-imag[t]<<"i"<<endl;
}
}
return 0;
}
|
27
|
13252
|
int main(int argc, char* argv[])
{
double a,b,c;
int n;
double x1,x2,m,p,q;
int i=0;
scanf ("%d",&n);
for (i=0;i<n;i++)
{ scanf ("%lf%lf%lf",&a,&b,&c);
m=b*b-4*a*c;
if (m==0)
{
p=(-b)/(2*a);
printf ("x1=x2=%.5lf\n",p);
}
if (m>0)
{
p=(-b + sqrt(b*b-4*a*c))/(2*a);
q=(-b - sqrt(b*b-4*a*c))/(2*a);
printf ("x1=%.5lf;x2=%.5lf\n",p,q);
}
if (m<0)
{
p=(-b)/(2*a) ;
q= (sqrt(-b*b+4*a*c)/(2*a));
printf ("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}}
return 0;
}
|
27
|
13253
|
int main()
{
int n;
double a,b,c,x1,x2,e,f,g;
scanf("%d\n",&n);
while(n--)
{
scanf("%lf %lf %lf\n",&a,&b,&c);
e=b*b-4*a*c;
if(e>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(e==0)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if(e<0)
{
f=(-b)/(2*a);
g=sqrt(-(b*b-4*a*c))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",f,g,f,g);
}
}
return 0;
}
|
27
|
13254
|
//???
//1100012822
//?????????
//2011?9?15?
int main()
{
int n;
double a , b ,c , x1 , x2 , t;
cin>>n;
while (n--)
{
cin>>a>>b>>c;
cout<<setprecision(5)<<fixed;
if (b * b - 4 * a * c >= 0)
{
x1 = (-b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2 = (-b - sqrt(b * b - 4 * a * c)) / (2 * a);
if (x1 == x2)
{
cout<<"x1=x2="<<x1<<endl;
}
else
{
cout<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
}
else
{
t = -b/(2 * a);
if (abs(t)<1e-6) t=abs(t);
cout<<"x1="<<t<<"+"<<(sqrt(-b * b + 4 * a * c))/(2 * a)<<"i";
cout<<";";
cout<<"x2="<<t<<"-"<<(sqrt(-b * b + 4 * a * c))/(2 * a)<<"i"<<endl;
}
}
return 0;
}
|
27
|
13255
|
int main()
{
int n,i;
double result[1000][3];
double a, b, c;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf", &a, &b ,&c);
if (b*b-4*a*c>0)
{ result[i][0]=1;
result[i][1]=(-b + (sqrt(b*b-4*a*c)))/(2*a);
result[i][2]=(-b - (sqrt(b*b-4*a*c)))/(2*a);
}
else if (b*b-4*a*c<0)
{
result[i][0]=2;
result[i][1]=(-b)/(2*a);
result[i][2]=(sqrt(4*a*c-b*b))/(2*a);
}
else
{
result[i][0]=3;
result[i][1]=(-b + sqrt(b*b-4*a*c))/(2*a);
}
}
for (i=0;i<n;i++)
{
if ((int)result[i][0]==1)
{
printf("x1=%.5f;x2=%.5f\n", result[i][1],result[i][2]);
}
else if ((int)result[i][0]==2)
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", result[i][1],result[i][2],result[i][1],result[i][2]);
}
else
{
printf("x1=x2=%.5f\n", result[i][1]);
}
}
return 0;
}
|
27
|
13256
|
int main(int argc, char* argv[])
{
int n,i;
double x1[11],x2[11],disc[11],real[11],imag[11];
float a[11],b[11],c[11];
scanf ("%d",&n);
for(;n>11;)
{
printf("Wrong input,please input again.\n");
scanf("%d",&n);
}
for(i=0;i<n;i++)
scanf("%f %f %f",&a[i],&b[i],&c[i]);
for(i=0;i<n;i++)
{
disc[i]=b[i]*b[i]-4*a[i]*c[i];
if (disc[i]>1e-6)
{
x1[i]=(-b[i]+sqrt(disc[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(disc[i]))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1[i],x2[i]);
}
else if (disc[i]<=1e-6&&disc[i]>=-1e-6)
{
x1[i]=-b[i]/(2*a[i]);
printf("x1=x2=%.5f\n",x1[i]);
}
else
{
real[i]=-b[i]/(2*a[i]);
imag[i]=sqrt(-disc[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",real[i],imag[i],real[i],imag[i]);
}
}
return 0;
}
|
27
|
13257
|
int main(int argc, char* argv[])
{
int n,i;
float a[100],b[100],c[100];
scanf("%d",&n);
for (i=0;i<n;i++){
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for (i=0;i<n;i++){
if(a[i]!=0){
double delta,m,n,x1,x2;
delta=b[i]*b[i]-4*a[i]*c[i];
if(b[i]==0)
m=0;
else
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(2*a[i]);
if(delta==0){
printf("x1=x2=%.5f\n",m);
}
else if(delta>0){
x1=m+n;
x2=m-n;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else{
if (b[i]==0){
printf("x1=-%.5f+%.5fi;",m,n);
printf("x2=-%.5f-%.5fi\n",m,n);
}
else{
printf("x1=%.5f+%.5fi;",m,n);
printf("x2=%.5f-%.5fi\n",m,n);
}
}
}
}
return 0;
}
|
27
|
13258
|
main()
{
int n,i;
double a[999],b[999],c[999],x1,x2,d;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
{
for(i=1;i<=n;i++)
{ if (b[i]!=0)
{d=b[i]*b[i]-4*a[i]*c[i];
if(d>0)
{ x1=(-b[i] + sqrt(d))/(2*a[i]);
x2=(-b[i] - sqrt(d))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{ x1=-b[i]/(2*a[i]);
x2=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
if(d<0)
{ x1=-b[i]/(2*a[i]);
x2=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
if (b[i]==0)
{
d=b[i]*b[i]-4*a[i]*c[i];
if(d>0)
{ x1=(-b[i] + sqrt(d))/(2*a[i]);
x2=(-b[i] - sqrt(d))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{ x1=(fabs)(-b[i]/(2*a[i]));
x2=(fabs)(-b[i]/(2*a[i]));
printf("x1=x2=%.5lf\n",x1);
}
if(d<0)
{ x1=(fabs)(-b[i]/(2*a[i]));
x2=(fabs)(sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]));
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
}
}
}
|
27
|
13259
|
int main()
{
int n;
cin>>n;//?????????
int i;
double a,b,c;
double x1,x2;
for(i=0;i<n;i++)
{
cin>>a>>b>>c;
if(b*b-4*a*c>0)//??????0?????????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a) ;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==0)//?????0???????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
printf("x1=x2=%.5f\n",x1);
}
else if(b*b-4*a*c<0)//?????0??????????
{
if(fabs(b)<1e-6) //b?0?????????
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(b)/(2*a), sqrt(4*a*c-b*b)/(2*a),(b)/(2*a), sqrt(4*a*c-b*b)/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a), sqrt(4*a*c-b*b)/(2*a),(-b)/(2*a), sqrt(4*a*c-b*b)/(2*a));
}
}
}
|
27
|
13260
|
int main(){
int n,i;
double a[100],b[100],c[100],disc[100],x1[100],x2[100],realpart[100],imagpart[100];
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++){
disc[i]=b[i]*b[i]-4*a[i]*c[i];
if(fabs(disc[i])<=1e-6)
printf("x1=x2=%.5lf\n",-b[i]/(2*a[i]));
else
if(disc[i]>1e-6){
x1[i]=(-b[i]+sqrt(disc[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(disc[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
else {
realpart[i]=-b[i]/(2*a[i]);
imagpart[i]=sqrt(-disc[i])/(2*a[i]);
if(realpart[i]==0)
realpart[i]=0;
printf("x1=%.5lf+%.5lfi;",realpart[i],imagpart[i]);
printf("x2=%.5lf-%.5lfi\n",realpart[i],imagpart[i]);
}
}
return 0;
}
|
27
|
13261
|
int main()
{
double a, b, c, d, x1, x2;
int i, n;
cin >> n;
for (i = 1; i <= n; i++)
{
cin >> a >> b >> c;
d = b * b - 4 * a * c;
if (fabs (d) < 1E-6)
{
x1 = -b / (2 * a);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
if (d < 0)
{
x1 = -b / (2 * a);
if (fabs (x1) < 1E-6)
x1 = fabs(x1);
x2 = sqrt(-d) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << "+" << x2 << "i;"
<< "x2=" << x1 << "-" << x2 << "i" << endl;
}
else
{
x1 = (-b + sqrt(d)) / (2 * a);
x2 = (-b - sqrt(d)) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
}
}
return 0;
}
|
27
|
13262
|
int main()
{
int n;
scanf("%d", &n);
while(n--){
double a, b, c;
scanf("%lf%lf%lf", &a, &b, &c);
double d = b*b-4*a*c;
double mid = -b/(2*a);
double dif = sqrt(fabs(d))/(2*a);
if(mid == 0)mid = 0;
if(d > 0)printf("x1=%.5f;x2=%.5f\n", mid+dif, mid-dif);
if(d == 0)printf("x1=x2=%.5f\n", mid);
if(d < 0)printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", mid, fabs(dif), mid, fabs(dif));
}
return 0;
}
|
27
|
13263
|
int main()
{
int n,i;
float a,b,c,delta;
double x1,x2,p,q;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%f%f%f\n",&a,&b,&c);
delta=b*b-4*a*c;
if(delta>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(delta==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2=x1;
printf("x1=x2=%.5lf\n",x1);
}
else
{
p=-b/(2*a);
q=sqrt(-delta)/(2*a);
if(p==-0)
p=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13264
|
int main(int argc, char* argv[])
{
int n,j;
double a[100],b[100],c[100];
double x1,x2,xi,x0;
scanf("%d",&n);
for(j=0;j<n;j++)
{
scanf("%lf%lf%lf",&a[j],&b[j],&c[j]);
}
for(j=0;j<n;j++)
{
if((b[j]*b[j]-4*a[j]*c[j])>=0){
x1=(-b[j]+sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2=(-b[j]-sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
if(x1!=x2)printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
else printf("x1=x2=%.5lf\n",x1);
}
if((b[j]*b[j]-4*a[j]*c[j])<0){
xi=sqrt(-b[j]*b[j]+4*a[j]*c[j])/(2*a[j]);
x0=b[j]/(2*a[j]);
if (x0!=0)x0=-x0;
printf("x1=%.5lf+%.5lfi;",x0,xi);
printf("x2=%.5lf-%.5lfi\n",x0,xi);
}
}
return 0;
}
|
27
|
13265
|
int main ()
{
int n,i;
double a,b,c,x1,x2,a1,a2,b1,b2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
a1=(-b)/(2*a);
a2=(-b)/(2*a);
b1=sqrt(4*a*c-b*b)/(2*a);
b2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",a1,b1,a2,b2);
}
}
return 0;
}
|
27
|
13266
|
int main()
{
int n;
cin>>n;
for(int i=0;i<n;i++)
{
double a,b,c;
cin>>a>>b>>c;
double delta=b*b-4*a*c;
double x1,x2;
if(delta>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a) ;
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else if(delta==0)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b/(2*a))<<endl;
}
else if(delta<0)
{
if(-b/(2*a)==-0) b=-b;
delta=-delta;
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)<<"+"<<sqrt(delta)/(2*a)<<"i;x2="<<-b/(2*a)<<"-"<<sqrt(delta)/(2*a)<<"i"<<endl;
}
}
return 0;
}
|
27
|
13267
|
main()
{
int n,i;
float a[100],b[100],c[100];
double d=0,x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
d=b[i]*b[i]-4.0*a[i]*c[i];
if(d>=0.001)
{
x1 = (-b[i]+sqrt(d))/(2.0*a[i]);
x2 = (-b[i]-sqrt(d))/(2.0*a[i]);
printf("x1=%.5f;",x1);
printf("x2=%.5f\n",x2);
}
if(d<0.001&&d>-0.001)
{
x1= (-b[i])/(2.0*a[i]);
printf("x1=x2=%.5f\n",x1);
}
if(d<=-0.001)
{
double m,n;
m=-b[i]/(2.0*a[i]);
n=sqrt(-d)/(2.0*a[i]);
if (m==0) printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",n,n);
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",m,n,m,n);
}
}
getchar(); getchar();getchar();getchar();
}
|
27
|
13268
|
/*
* ?????????.cpp
*?????????
* Created on: 2012-10-12
* Author: ???
*/
int main()
{
int n,i;
float a,b,c;
double d,e,f,x1,x2; //????
cin>>n; //?????????
for(i=n;i>=1;i--) //??????
{
cin>>a>>b>>c; //???????
d=b*b-4*a*c; //?????
if(d>0) //??????
{
x1=(0-b+sqrt(d))/(2*a);
x2=(0-b-sqrt(d))/(2*a); //?????
cout<<fixed<<setprecision(5)<<"x1="<<x1<<';'<<"x2="<<x2<<endl;
}
if(d==0) //??????
{
x1=(0-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl; //x1??x2
}
if(d<0) //??????
{
e=(sqrt(-d))/(2*a);
f=(0-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<f<<"+"<<e<<"i"<<";"<<"x2="<<f<<-e<<"i"<<endl;
}
}
return 0;
} //????
|
27
|
13269
|
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,disc,x1,x2,realpart,imagpart;
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
disc=b*b-4*a*c;
if(fabs(disc)<=1e-6)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%7.5f\n",x1);
}
else
if(disc>1e-6)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%7.5f;x2=%7.5f\n",x1,x2);
}
else
{
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
if(realpart==0)
printf("x1=0.00000+%7.5fi;x2=0.00000-%7.5fi\n",imagpart,imagpart);
else
printf("x1=%7.5f+%7.5fi;x2=%7.5f-%7.5fi\n",realpart,imagpart,realpart,imagpart);
}
}
return 0;
}
|
27
|
13270
|
int main()
{
int n;
int i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
double a,b,c,x1,x2;
double t;
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
char s;
s=i;
x1 = sqrt(4*a*c-b*b)/(2*a);
x2 = sqrt(4*a*c-b*b)/(2*a);
t = -b/(2*a);
if(t!=0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",t,x1,t,x2);
else
{
t=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",t,x1,t,x2);
}
}
}
return 0;
}
|
27
|
13271
|
int main(int argc, char* argv[])
{ int n,i;
scanf("%d\n",&n);
struct{
double a,b,c;
}xs[100];
for(i=0;i<n;i++){
scanf("%lf %lf %lf\n",&xs[i].a,&xs[i].b,&xs[i].c);
}
for(i=0;i<n;i++){
double a1,b1,c1;
a1=xs[i].a;
b1=xs[i].b;
c1=xs[i].c;
if((b1*b1-4*a1*c1)>0){
double x1,x2;
x1=(-b1+sqrt(b1*b1-4*a1*c1))/(2*a1);
x2=(-b1-sqrt(b1*b1-4*a1*c1))/(2*a1);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if((b1*b1-4*a1*c1)==0){
double x1,x2;
x1=x2=(-b1)/(2*a1);
printf("x1=x2=%.5lf\n",x1);
}
if((b1*b1-4*a1*c1)<0){
double t1,t2;
t1=(-b1)/(2*a1);
t2=sqrt(4*a1*c1-b1*b1)/(2*a1);
if(t1==-0.00000)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",t2,t2);
else {
printf("x1=%.5lf+%.5lfi;",t1,t2);
printf("x2=%.5lf-%.5lfi\n",t1,t2);
}
}
}
return 0;
}
|
27
|
13272
|
int n;
int main()
{
scanf("%d",&n);
for(int i = 1;i <= n;i ++){
double a,b,c;
double x1 = 0,x2 = 0;
scanf("%lf%lf%lf",&a,&b,&c);
if(b * b - 4 * a * c > 0){
x1 = (-1 * b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2 = (-1 * b - sqrt(b * b - 4 * a * c)) / (2 * a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else {
if(b * b - 4 * a * c == 0){
x1 = (-1 * b + sqrt(b * b - 4 * a * c)) / (2 * a);
printf("x1=x2=%.5lf\n",x1);
}
else{
x1 = sqrt(4 * a * c - b * b) / (2 * a);
if(b == 0)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",x1,x1);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",(-1 * b) / (2 * a),x1,(-1 * b) / (2 * a),x1);
}
}
}
return 0 ;
}
|
27
|
13273
|
int main(int argc, char* argv[])
{
int n,i;
scanf("%d",&n);
double a,b,c,x1,x2,t,t1,t2;
for(i=0;i<n;i++){
scanf("%lf %lf %lf",&a,&b,&c);
t=b*b-4*a*c;
if(t>0){
printf("x1=%.5lf;x2=%.5lf\n",x1=(-b+sqrt(t))/(2*a),x2=(-b-sqrt(t))/(2*a));
}
else if(t==0)
printf("x1=x2=%.5lf\n",x1=-b/(2*a));
else if(t<0){
t=fabs(t);
t1=-b/(2*a);
t2=sqrt(t)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",t1,t2,t1,t2);
}
}
return 0;
}
|
27
|
13274
|
int main()
{
int n,i;
double a,b,c,d,e,s;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
e=(-1)*b/(2*a);
if(d>0){
s=sqrt(d)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",e+s,e-s);
}
else if(d<0){
s=sqrt((-1)*d)/(2*a);
if(e==0)e=0-e;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,s,e,s);
}
else{
printf("x1=x2=%.5lf\n",e);
}
}
return 0;
}
|
27
|
13275
|
int main(void)
{
int n;
double a, b, c, delta, x1, x2, img, rl;
cin >>n;
for (int i = 1; i <= n; i++)
{
cin >> a >> b >> c;
delta = b * b - 4 * a * c;
if (delta > 0)
{
x1 = (-b + sqrt(delta))/(2 * a);
x2 = (-b - sqrt(delta))/(2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else if (delta == 0)
{
x1 = (-b)/(2*a);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
img = sqrt(-delta) / (2 * a);
rl = (-b) / (2 * a);
if (rl != 0)
{
cout << fixed << setprecision(5) << "x1=" << rl << "+" << img << "i;";
cout << fixed << setprecision(5) << "x2=" << rl << "-" << img << "i" << endl;
}
else
{
cout << fixed << setprecision(5) << "x1=" << "0.00000" << "+" << img << "i;";
cout << fixed << setprecision(5) << "x2=" << "0.00000" << "-" << img << "i" << endl;
}
}
}
return 0;
}
|
27
|
13276
|
//********************************
//*???????????? **
//*?????? 1300012713 **
//*???2013.10.11 **
//********************************
int main()
{
int n; //????n
cin >> n; //??n
double a, b, c, x1, x2, d, e; //???????????
for (int i=1; i <= n; i++) //?????????
{
cin >> a >> b >> c; //??????
if (b * b - 4 * a * c > 0 ) //????????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);//?????
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout << "x1=";//????
printf("%.5f", x1);
cout << ";x2=";
printf("%.5f\n", x2);
}
if (b * b - 4 * a * c == 0 )//????????
{
x1 = (-b)/(2*a); //???
cout << "x1=x2=";//????
printf("%.5f\n", x1);
}
if (b * b - 4 * a * c < 0 )//????????
{
d = sqrt(4*a*c-b*b)/(2*a);
e = (-b)/(2*a);
if (e ==0)
e=0;
x1 = e + d * i;//????
x2 = e - d * i;
cout << "x1=";//????
printf("%.5f", e);
cout << "+";
printf("%.5f", d);
cout << "i;x2=";
printf("%.5f", e);
cout << "-";
printf("%.5f", d);
cout << "i" << endl;
}
}
return 0;
}
|
27
|
13277
|
int main(int argc, char* argv[])
{
int n,i;
double a,b,c,x1,x2,m,x;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if((b*b-4*a*c)>=0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
if(x1==x2)
printf("x1=x2=%.5lf\n",x1);
else
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
m=sqrt(-b*b+4*a*c)/2.0/a;
x=-b/2.0/a;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x,m,x,m);
}
}
return 0;
}
|
27
|
13278
|
int main()
{
int n,i;
double a[30],b[30],c[30],x1,x2,m,q,p;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
if((b[i]*b[i]-4*a[i]*c[i])>0)
{
x1 = (-b[i] + sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2 = (-b[i] - sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
else if((b[i]*b[i]-4*a[i]*c[i])==0)
{
x1=x2=(-b[i])/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
else
{
m=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
q=-(sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]));
p=(-b[i])/(2*a[i]);
if(a>0)
{
printf("x1=%.5lf+%.5lfi;",p,m);
printf("x2=%.5lf%.5lfi\n",p,q);
}
else
{
printf("x1=%.5lf%.5lfi;",p,m);
printf("x2=%.5lf+%.5lfi\n",p,q);
}
}
}
return 0;
}
|
27
|
13279
|
main()
{
int n,i;
float a[1000],gen,pan,p,q;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f%f%f",&a[3*i],&a[3*i+1],&a[3*i+2]);
}
for(i=0;i<n;i++)
{
pan=a[3*i+1]*a[3*i+1]-4*a[3*i]*a[3*i+2];
if(fabs(pan)<=0.00001)
printf("x1=x2=%.5f\n",-a[3*i+1]/(2*a[3*i]));
gen=sqrt(fabs(pan));
p=-a[3*i+1]/(2*a[3*i]),q=gen/(2*a[3*i]);
if(fabs(p)<=0.000001)
p=0.00000;
if(pan>0.00001)
printf("x1=%.5f;x2=%.5f\n",p+q,p-q);
if(pan<-0.00001)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
//printf("%f%f%f",a[0],a[1],a[2]);
}
|
27
|
13280
|
//********************************
//*???????????? **
//*?????? 1300012972 **
//*???2013.10.11 **
//********************************
int main()
{
int n;
// ??????a,b,c???????x1,x2??????D?????d,e??????
double a, b, c, x1, x2, D, d, e;
cin >> n;
for (int k=1; k<=n; k++)
{
cin >> a >> b >> c;
if (b * b-4 * a * c > 0) // ????????????
{
x1=(-b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2=(-b - sqrt(b * b - 4 * a * c)) / (2 * a); //????
if (fabs(x1) < 1e-4)
x1=0;
if (fabs(x2) < 1e-4) //????
x2=0;
cout << fixed << setprecision(5) << "x1=" << x1
<< ";" << "x2=" << x2 << endl; // ???
}
else if (b * b - 4 * a * c == 0) // ?????????
{
x1=(-b) / (2 * a);
if (fabs(x1)<1e-4)
x1=0;
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl; //????
}
else
{
d=(-b) / (2 * a); // ?????
e=sqrt(4 * a * c - b * b) / (2 * a); //?????
if (fabs(d) < 1e-4)
d=0;
cout << fixed << setprecision(5) << "x1=" << d << "+" << e << "i"
<< ";" << "x2=" << d << "-" << e << "i" << endl;
}
}
return 0;
}
|
27
|
13281
|
int main()
{
int i,n;
float a,b,c;
double x1,x2,d,e;
scanf("%d",&n);
for (i=1;i<=n;i++)
{scanf("%f %f %f",&a,&b,&c);
d=b*b-4*a*c;
if (b==0)
{if(d>0)
{x1 = (sqrt(b*b-4*a*c))/(2*a);
x2 = (- sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{
if(d==0)
{
x1=(sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{e=sqrt(-d)/(-2*a);
if(e>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,e,b,e);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,-e,b,-e);
}
}
}
else{
if(d>0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{
if(d==0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{e=sqrt(-d)/(-2*a);
if(e>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),e,-b/(2*a),e);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),-e,-b/(2*a),-e);
}
}
}
}
}
|
27
|
13282
|
void main()
{
int n;
int i;
double a[100],b[100],c[100];
double x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
for(i=0;i<n;i++)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1 = (-b[i] + sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2 = (-b[i] - sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b[i]*b[i]-4*a[i]*c[i]<0)
{
x1 =sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
x2 = sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b[i]/(2*a[i]),x1,-b[i]/(2*a[i]),x2);
}
else
{
x1= -b[i]/(2*a[i]);
printf("x1=x2=%.5f\n",x1);
}
}
}
|
27
|
13283
|
/**
????6
? ?????
? ??10.12
? ???????????
*/
int main()
{
int n; // ?????????n
double a, b, c; // ????????a,b,c
double x1, x2; // ????????x1,x2
cin >> n; // ??n
for(int i=1 ; i<=n ; i++) // ????
{
cin >> a >> b >> c; // ??a,b,c
if(b * b - 4 * a * c < 0) // ????????
{
cout << fixed;
// ????????????????i???
if(b != 0)
{
cout << "x1=" << setprecision(5) << -b/(2*a) << "+" ;
cout << setprecision(5) << sqrt(4 * a * c- b * b) / (2*a) << "i;";
cout << "x2=" << setprecision(5) << -b/(2*a) << "-" ;
cout << setprecision(5) << sqrt(4 * a * c- b * b) / (2*a) << "i" << endl;
}
//???????????????????????
if(b == 0)
{
cout << "x1=" << setprecision(5) << b/(2*a) << "+" ;
cout << setprecision(5) << sqrt(4 * a * c- b * b) / (2*a) << "i;";
cout << "x2=" << setprecision(5) << b/(2*a) << "-" ;
cout << setprecision(5) << sqrt(4 * a * c- b * b) / (2*a) << "i" << endl;
}
}
if (b * b - 4 * a * c == 0)
{ x1 = -b / (2 * a);
cout << fixed;
// ?????0??x1,x2??
cout << "x1=x2=" << setprecision(5) <<x1 << endl;
}
if (b * b - 4 * a * c > 0)
{
x1 = (-b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2 = (-b - sqrt(b * b - 4 * a * c)) / (2 * a);
cout << fixed;
// ????????????x1,x2
cout << "x1=" << setprecision(5) << x1 << ";" ;
cout << "x2=" << setprecision(5) << x2 << endl;
}
}
return 0;
}
|
27
|
13284
|
int main()
{
int n,j;
float x[100],y[100],z[100];
double x1,x2,p,q,a,b,c;
scanf("%d",&n);
for(j=1;j<=n;j++)
{
scanf("%f%f%f",&x[j],&y[j],&z[j]);
}
for(j=1;j<=n;j++)
{
a=x[j];
b=y[j];
c=z[j];
if(b*b>4*a*c)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b==4*a*c)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
p=-b/(2*a);
q=sqrt(4*a*c-b*b);
q=q/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
}
}
|
27
|
13285
|
//*****************************
//* ??? ??????? *
//* ??? 1100012820 *
//* ?? 20110915 *
//*****************************
int main()
{
int i, n; //????n?????i
double a, b, c, det; //????????????????;
cin>>n; //??????n
cout<<fixed<<setprecision(5);
for (i=1; i<=n; i++) //????????
{
cin>>a>>b>>c; //?????
det = b * b - 4 * a * c; //?????
if (det < 0) //???????0
{
if (a > 0) //??a??0
cout<<"x1="<<b / a / (-2) + 1 - 1
<<"+"<<sqrt(fabs(det))/ a / 2
<<"i;x2="<<-(b / a / 2) + 1 - 1
<<-sqrt(fabs(det))/ a / 2
<<"i"<<endl;
//???????
else //??a??0
cout<<"x1="<<(-b) / a / 2
<<"+"<<sqrt(fabs(det))/ a / 2
<<"i;x2="<<-(b / a / 2)
<<-sqrt(fabs(det))/ a / 2
<<"i"<<endl;
//???????
}
else if (det == 0) //???????0
cout<<"x1=x2="<<(-b) / a / 2<<endl;
//??????
else //????????0?
cout<<"x1="
<<(- b + sqrt(b * b - 4 * a * c)) / (2 * a)
<<";x2="
<<( - b - sqrt( b * b - 4 * a * c)) / (2 * a)
<<endl;
//???????
//????
} //????
return 0;
}
|
27
|
13286
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int i;
double a[200],b[200],c[200],disc[100],X1[100],X2[100],realpart[100],imagpart[100];
for(i=0;i<n;i++)
{scanf("%lf%lf%lf\n",&a[i],&b[i],&c[i]);}
disc[i]=b[i]*b[i]-4*a[i]*c[i];
for(i=0;i<n;i++)
{
disc[i]=b[i]*b[i]-4*a[i]*c[i];
if(fabs(disc[i])<=1e-6)
{
printf("x1=x2=%.5f\n",-b[i]/(2*a[i]));
}
else if(disc[i]>1e-6)
{
X1[i]=(-b[i]+sqrt(disc[i]))/(2*a[i]);
X2[i]=(-b[i]-sqrt(disc[i]))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",X1[i],X2[i]);
}
else
{
realpart[i]=-b[i]/(2*a[i]);
imagpart[i]=sqrt(-disc[i])/(2*a[i]);
if(fabs(realpart[i])<=1e-6)
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-realpart [i],imagpart[i],-realpart[i],imagpart[i]);
}
else{printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",realpart[i],imagpart[i],realpart[i],imagpart[i]);}
}
}
return 0;
}
|
27
|
13287
|
int main() {
int n;
cin >>n;
for (;n>0;n=n-1)
{
double a,b,c,d,x1,x2,x1re,x1im,x2re,x2im;//a,b,c are the output. d is the discriminant.
cin >>a>>b>>c;
d=b*b-4*a*c;
if (d>=0)
{
if(b!=0)//used to avoid the output of -0.00000+...
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
if (x1!=x2)
{
cout <<fixed<<setprecision(5)<<"x1="<<x1;
cout <<";";
cout <<fixed<<setprecision(5)<<"x2="<<x2<<endl;
}
else
cout <<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else//used to avoid the output of -0.00000+...
{
x1=(sqrt(d))/(2*a);
x2=(sqrt(d))/(2*a);
if (x1!=x2)
{
cout <<fixed<<setprecision(5)<<"x1="<<x1;
cout <<";";
cout <<fixed<<setprecision(5)<<"x2="<<x2<<endl;
}
else
cout <<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
}
else
{
if(b!=0)//used to avoid the output of -0.00000+...
{
x1re=-b/(2*a);
x2re=-b/(2*a);
x1im=(sqrt(-d))/(2*a);
x2im=-(sqrt(-d))/(2*a);
cout <<noshowpos<<fixed<<setprecision(5)<<"x1="<<x1re<<showpos<<x1im<<"i";//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
cout <<";";
cout <<noshowpos<<fixed<<setprecision(5)<<"x2="<<x2re<<showpos<<x2im<<"i"<<endl;//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
}
else//used to avoid the output of -0.00000+...
{
x1re=0;
x2re=0;
x1im=(sqrt(-d))/(2*a);
x2im=-(sqrt(-d))/(2*a);
cout <<noshowpos<<fixed<<setprecision(5)<<"x1="<<x1re<<showpos<<x1im<<"i";//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
cout <<";";
cout <<noshowpos<<fixed<<setprecision(5)<<"x2="<<x2re<<showpos<<x2im<<"i"<<endl;//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
}
}
}
return 0;
}
|
27
|
13288
|
main()
{
int n;
scanf("%d",&n);
double e[100][3];
int i;
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&e[i][0],&e[i][1],&e[i][2]);
}
double a[100][2];
for(i=0;i<n;i++)
{
if((e[i][1]*e[i][1]-4*e[i][0]*e[i][2])>0)
{
a[i][0]=(-e[i][1] + sqrt(e[i][1]*e[i][1]-4*e[i][0]*e[i][2]))/(2*e[i][0]);
a[i][1]=(-e[i][1] - sqrt(e[i][1]*e[i][1]-4*e[i][0]*e[i][2]))/(2*e[i][0]);
printf("x1=%.5lf;x2=%.5lf\n",a[i][0],a[i][1]);
}
if((e[i][1]*e[i][1]-4*e[i][0]*e[i][2])==0)
{
a[i][0]=(-e[i][1])/(2*e[i][0]);
a[i][1]=(-e[i][1])/(2*e[i][0]);
printf("x1=x2=%.5lf\n",a[i][0]);
}
if((e[i][1]*e[i][1]-4*e[i][0]*e[i][2])<0)
{
char c='i';
double p,q;
if(e[i][1]==0)
{
p=(e[i][1])/(2*e[i][0]);
q=(sqrt(4*e[i][0]*e[i][2]-e[i][1]*e[i][1]))/(2*e[i][0]);
printf("x1=%.5lf+%.5lf%c;x2=%.5lf-%.5lf%c\n",p,q,c,p,q,c);
}
else
{
p=(-e[i][1])/(2*e[i][0]);
q=(sqrt(4*e[i][0]*e[i][2]-e[i][1]*e[i][1]))/(2*e[i][0]);
printf("x1=%.5lf+%.5lf%c;x2=%.5lf-%.5lf%c\n",p,q,c,p,q,c);
}
}
}
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
}
|
27
|
13289
|
int main(int argc, char* argv[])
{
int n;
scanf("%d/n",&n);
double a=0,b=0,c=0;
for(;n>0;n--){
scanf("%lf %lf %lf",&a,&b,&c);
double x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
double x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if((b*b-4*a*c)>0){
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else if((b*b-4*a*c)==0){
printf("x1=x2=%.5f\n",x2);}
else if((b*b-4*a*c)<0){
double c1,d1,d2;
c1=(double)(-b/(a*2));
d1=sqrt(4*a*c-b*b)/(2*a);
d2=-d1;
if(c1==-0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",-c1,d1,-c1,d2);}
else {printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",c1,d1,c1,d2);}}}
return 0;
}
|
27
|
13290
|
int main()
{
int n,i;
double a,b,c,disc,x1,x2,realpart,imagpart;
scanf("%d",&n);
i=0;
while(i<n)
{
scanf("%lf %lf %lf",&a,&b,&c);
if(fabs(a)<=1e-6)
printf("error\n",a);
else
{ disc=b*b-4*a*c;
if(fabs(disc)<=1e-6)
printf("x1=x2=%.5lf\n",-b/(2*a));
else
{
if(disc>1e-6)
{
x1 = (-b + sqrt(disc))/(2*a);
x2 = (-b - sqrt(disc))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",realpart,imagpart,realpart,imagpart);
}
}
}
i++;
}
return 0;
}
|
27
|
13291
|
int main()
{
int i, n;
double *p, a,b,c, dt, x1, x2;
scanf("%d",&n);
p=malloc(sizeof(double)*3*n);
for(i=0; i<n; i++)
{
scanf("%lf %lf %lf", p+i*3, p+i*3+1, p+i*3+2);
}
for(i=0; i<n; i++)
{
a=*(p+i*3);
b=*(p+i*3+1);
c=*(p+i*3+2);
dt=b*b-4*a*c;
if(dt>0)
{
x1 = (-b + sqrt(dt))/(2*a);
x2 = (-b - sqrt(dt))/(2*a);
printf("x1=%.5f;x2=%.5f\n", x1, x2);
}
else if(fabs(dt)<0.00001)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n", x1);
}
else
{
x1 = (-b)/(2*a);
if(fabs(x1)<0.00001)
x1=0;
x2 = sqrt(-dt)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", x1, x2, x1, x2);
}
}
}
|
27
|
13292
|
int main()
{
int n,j;
double a[100],b[100],c[100],p,q,u,x1,x2;
char r,s,t;
r='i';
s='+';
t='-';
scanf("%d",&n);
for(j=0;j<n;j++){
scanf("%lf %lf %lf",&a[j],&b[j],&c[j]);
p=(-b[j])/(2*a[j]);
q=b[j]*b[j]-4*a[j]*c[j];
if (p!=0)
{
if (q>0)
{x1=p+sqrt(q)/(2*a[j]);
x2=p-sqrt(q)/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2); }
else if (q<0){
u=sqrt(-q)/(2*a[j]);
printf("x1=%.5lf%c%.5lf%c;x2=%.5lf%c%.5lf%c\n",p,s,u,r,p,t,u,r);}
else
printf("x1=x2=%.5lf\n",p);
}
else
{p=(b[j])/(2*a[j]);
if (q>0)
{x1=p+sqrt(q)/(2*a[j]);
x2=p-sqrt(q)/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2); }
else if (q<0){
u=sqrt(-q)/(2*a[j]);
printf("x1=%.5lf%c%.5lf%c;x2=%.5lf%c%.5lf%c\n",p,s,u,r,p,t,u,r);}
else
printf("x1=x2=%.5lf\n",p);
}
}
}
|
27
|
13293
|
int main()
{
int m=0,n;
double a,b,c,d,x1,x2,x1i,x2i;
scanf("%d",&n);
do{
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
else if(b*b-4*a*c==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=-b/(2*a);
x1i=sqrt(4*a*c-b*b)/(2*a);
x2=-b/(2*a);
x2i=-sqrt(4*a*c-b*b)/(2*a);
if(b/(2*a)==0)
{
x1=0;
x2=0;
}
printf("x1=%.5lf+%.5lfi;",x1,x1i);
printf("x2=%.5lf%.5lfi\n",x2,x2i);
}
m++;
}while(m<n);
return 0;
}
|
27
|
13294
|
void main()
{
int n,i;
double a,b,c,x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if((b*b-4*a*c)>0)
{ x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if((b*b-4*a*c)==0)
{
x1 = -b /(2*a);
x2 = -b /(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if((b*b-4*a*c)<0)
{
x1 =-b /(2*a);
x2=sqrt(-b*b+4*a*c)/(2*a);
if(x1==0)
{
x1=b/(2*a);
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13295
|
int main()
{
int n;
scanf("%d\n",&n);
int i;
i=1;
do
{ double a,b,c;
scanf("%lf%lf%lf\n",&a,&b,&c);
double x1,x2,disc,realpart,imagpart;
disc=b*b-4*a*c;
if(fabs(disc)<=1e-6)
printf("x1=x2=%.5f\n",-b/(2*a));
else if(disc>1e-6)
{
x1=(-b+sqrt(disc))/(2*a);
x2=(-b-sqrt(disc))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
if(b==0) printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,imagpart,b,imagpart);
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",realpart,imagpart,realpart,imagpart);
}
i++;
}
while(i<=n);
}
|
27
|
13296
|
//****************************************
//*???????????? **
//*?????? 1100012927 **
//*???2011.09.16 **
//****************************************
int main()
{
int n;
double a,b,c,delta,x1,x2,x1r;
cin>>n;
do{cin>>a>>b>>c;
delta=b*b-4*a*c;
if (delta>0) {x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
printf("x1=%.5f",x1);
cout<<";";
printf("x2=%.5f",x2);
cout<<""<<endl;}
else if (delta==0) {x1=(b)/(2*a);
printf("x1=x2=%.5f",-x1);
cout<<""<<endl;}
else if (delta<0) {delta=-delta;
x1=(sqrt(delta))/(2*a);
x2=(-sqrt(delta))/(2*a);
x1r=(-b)/(2*a);
if (x1r==0)
{ printf("x1=%.5f+",(-x1r));
printf("%.5fi",x1);
cout<<";";
printf("x2=%.5f",(-x1r));
printf("%.5fi",x2);
cout<<""<<endl;}
else { printf("x1=%.5f+",(x1r));
printf("%.5fi",x1);
cout<<";";
printf("x2=%.5f",(x1r));
printf("%.5fi",x2);
cout<<""<<endl;} }
n=n-1;
}while(n>=1);
return 0;}
|
27
|
13297
|
int main()
{
int n, i;
double a, b, c;
double x1, x2, real,imaginary;
scanf("%d", &n);
double temp;
for( i=0; i<n; i++)
{
scanf("%lf%lf%lf", &a, &b, &c);
temp = b*b - 4*a*c;
if( temp >0 )
{
x1 = (-b+sqrt(temp))/(2*a);
x2 = (-b-sqrt(temp))/(2*a);
printf("x1=%.5f;x2=%.5f\n", x1, x2);
}
else if( temp == 0 )
{
x1 = -b/(2*a);
printf("x1=x2=%.5f\n", x1);
}
else
{
real =-b/(2*a);
imaginary = sqrt(-temp)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", real, imaginary, real, imaginary);
}
}
}
|
27
|
13298
|
int main()
{int n,i;
double a,b,c,x1,x2,delta,p,q;
cin>>n;
for (i=1;i<=n;i++)
{
cin>>a>>b>>c;
delta=b*b-4*a*c;
if (delta>0)
{x1= (-b + sqrt(delta))/(2*a) ;
x2 = (-b - sqrt(delta))/(2*a);
cout<<"x1="<<fixed<<setprecision(5)<<x1<<";"<<"x2="<<fixed<<setprecision(5)<<x2<<endl;
}
if (delta==0)
{x1=(-b)/(2*a);
cout<<"x1=x2="<<fixed<<setprecision(5)<<x1<<endl;
}
if (delta<0)
{p=(-b)/(2*a);
q=sqrt(-delta)/(2*a);
if (b==0)
{p=0;
}
cout<<"x1="<<fixed<<setprecision(5)<<p<<"+"<<fixed<<setprecision(5)<<q<<"i;"<<"x2="<<fixed<<setprecision(5)<<p<<"-"<<fixed<<setprecision(5)<<q<<"i"<<endl;
}
}
return 0;
}
|
27
|
13299
|
int main()
{
int n,i=1;
double a,b,c,x1,x2,m,e,f;
scanf("%d",&n);
while((i<=n)&&a!=0)
{
scanf("%lf%lf%lf",&a,&b,&c);
m=b*b-4*a*c;
e=(-b+sqrt(b*b-4*a*c))/(2*a);
f=(-b-sqrt(b*b-4*a*c))/(2*a);
if(b!=0)
{
if((e!=f)&&(m>=0))
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if((m>=0)&&(e=f))
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=-b/(2*a);
x2=sqrt(-m)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
else
{if((e!=f)&&(m>=0))
{
x1=(sqrt(b*b-4*a*c))/(2*a);
x2=(-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if((m>=0)&&(e=f))
{
x1=(sqrt(b*b-4*a*c))/(2*a);
x2=(-sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=-b/(2*a);
x2=sqrt(-m)/(2*a);
printf("x1=-0.00000+%.5lfi;x2=-0.00000-%.5lfi\n",x2,x2);
}
}
i++;
}
return 0;
}
|
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