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27
|
13100
|
/*
???:????????
???:??
????:2011.9.16
*/
int main() //???
{ //?????
int n,num;
double a,b,c,d,e,f;
cin >> num; //??????
for(n=0; n<num; n++)
{ //????
cin >> a >> b >> c ; //??????
d = b * b - 4 * a * c; //?????
e = ( 0 - b )/( 2 * a );
cout << fixed << setprecision(5); //??????????????5?
if(d==0) //??????0???????
cout << "x1=x2=" << e << endl;
else //???????0????????
{
if(d>0) //??????0????????
{
f = sqrt ( d )/( 2 * a );
cout << "x1=" << e + f << ";" << "x2=" << e - f << endl;
}
else //??????0????????
{
f = sqrt ( -d )/( 2 * a );
cout << "x1=" << e << "+" << f << "i" << ";" << "x2=" << e << "-" << f << "i" << endl;
}
}
}
return 0;
} //?????
|
27
|
13101
|
int main()
{
int k;
double a , b , c , x1 , x2 , m ,n;
cin >> k ;
for(int i=1 ; i <= k ; i++)
{
cin >> a >> b >> c;
if(b*b-4*a*c == 0)
{
cout << fixed;
cout << setprecision(5) << "x1=x2=" << (-b)/(2*a) << endl;
}
else
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;
cout << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else
{
m = (-b) / (2 * a);
n = sqrt(-b * b + 4 * a * c) / (2 * a);
if(m != 0)
{
cout << fixed;
cout << setprecision(5) << "x1=" << m << "+" << n << "i" << ";" << "x2=" << m << -n << "i" << endl;
}
else
{
cout << fixed;
cout << setprecision(5) << "x1=" << "0.00000" << "+" << n << "i" << ";" << "x2=" << "0.00000" << -n << "i" << endl;
}
}
}
return 0;
}
|
27
|
13102
|
void main()
{
double a,b,c,d,r,h,x1,x2;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
r=(-b)/(2*a);
if(fabs(d)<=(1e-6))
{
x1=r;
printf("x1=x2=%.5lf\n",x1);
}
else if(d>1e-6)
{
x1=r+sqrt(d)/(2*a);
x2=r-sqrt(d)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(d<1e-6)
{
h=sqrt(-d)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",r,h,r,h);
}
}
}
|
27
|
13103
|
int main() {
int n;
scanf("%d", &n);
for (int i = 0; i < n; ++i) {
double a, b, c;
scanf("%lf%lf%lf", &a, &b, &c);
double delta = b*b - 4*a*c;
double x1, x2;
if (delta > 0) {
x1 = (-b + sqrt(delta)) / (2*a);
x2 = (-b - sqrt(delta)) / (2*a);
if (x1 == 0.0)
x1 = 0.0;
if (x2 == 0.0)
x2 = 0.0;
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (delta == 0) {
x1 = -b / (2*a);
if (x1 == 0.0)
x1 = 0.0;
printf("x1=x2=%.5lf\n", x1);
}
else {
double real, imag;
real = -b / (2*a);
if (real == 0.0)
real = 0.0;
imag = sqrt(-delta) / (2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", real, imag, real, imag);
}
}
}
|
27
|
13104
|
int main()
{
int n;
double a[100];
double b[100];
double c[100];
double d,x1[100],x2[100],e,f;
int j;
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++)
{
d=b[j]*b[j]-4*a[j]*c[j];
if(d>0)
{
x1[j]=(-b[j]+sqrt(d))/(2*a[j]);
x2[j]=(-b[j]-sqrt(d))/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1[j],x2[j]);
}
else if (d==0)
{
x1[j]=x2[j]=-b[j]/(2*a[j]);
printf("x1=x2=%.5lf\n",x1[j]);
}
else
{
e=-b[j]/(2*a[j]);
f=sqrt(-d)/(2*a[j]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,f,e,f);
}
}
return 0;
}
|
27
|
13105
|
double x1 ( double a , double b , double c ){
double x11 ;
double det = b*b-4*a*c ;
if ( det >= 0 ) x11 = (-b + sqrt(det))/(2*a);
else x11 = sqrt(-det)/(2*a);
return(x11);
}
double x2 ( double a , double b , double c ){
double x22;
double det = b*b-4*a*c ;
if(det >= 0) x22 = (-b - sqrt(det)) / (2*a);
else x22 = sqrt(-det)/(2*a);
return(x22);
}
int main(){
int n , i;
double det;
double a[100] , b[100] , c[100];
scanf("%d" , &n );
for( i = 1 ; i <= n ; i++ ){
scanf("%lf%lf%lf\n" , &a[i] , &b[i] , &c[i]);
}
for( i = 1 ; i <= n ; i++ ){
//printf("%.5f %.5f %.5f \n" , a[i] , b[i] , c[i]);
det = b[i] * b[i] - 4 * a[i] * c[i] ;
if( det >= 0 && x1( a[i] , b[i] , c[i] ) != x2( a[i] , b[i] , c[i] ) ) printf( "x1=%.5f;x2=%.5f\n" , x1( a[i] , b[i] , c[i] ) , x2( a[i] , b[i] , c[i]));
else if( det >= 0 ) printf( "x1=x2=%.5f\n" , x1( a[i] , b[i] , c[i] ) );
else if( b[i] != 0) printf( "x1=%.5f+%.5fi;x2=%.5f-%.5fi\n" , -b[i] / (2*a[i]) , x1( a[i] , b[i] , c[i]) , -b[i] / (2*a[i]) , x2( a[i] , b[i] , c[i] ) );
else printf( "x1=%.5f+%.5fi;x2=%.5f-%.5fi\n" , b[i] / (2*a[i]) , x1( a[i] , b[i] , c[i]) , b[i] / (2*a[i]) , x2( a[i] , b[i] , c[i] ) );
//printf("%.5f\n %.5f",b[i] / (2 * a[i]) , b[i] );
}
return(0);
}
|
27
|
13106
|
int main()
{
int n=0;
float a[10];
float b[10];
float c[10];
double x1[10];
double x2[10];
int j;
scanf("%d",&n);
for(j=0;j<n;j++)
{
scanf("%f %f %f\n",&a[j],&b[j],&c[j]);
}
for(j=0;j<n;j++)
{
if((b[j]*b[j]-4*a[j]*c[j])>0)
{
x1[j]=(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2[j]=(-b[j] - sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1[j],x2[j]);
}
if((b[j]*b[j]-4*a[j]*c[j])==0)
{
x2[j]=(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=x2=%.5lf\n",x2[j]);
}
if((b[j]*b[j]-4*a[j]*c[j])<0)
{
double m;
double n;
m=-b[j]/(2*a[j]);
n=sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
}
return 0;
}
|
27
|
13107
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
double x1=0, x2=0, a, b, c, i, j, k, d, e;
for(i=1, j=1, k=1;i<=n, j<=n, k<=n;i++, j++, k++)
{
scanf("%lf%lf%lf",&a, &b, &c);
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if(((x1)*(x2)>=0)&&((x1)!=(x2)))
{
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(((x1)*(x2)>=0)&&((x1)=(x2)))
{
printf("x1=x2=%.5lf\n", x1);
}
else
{
d=-(b/(2*a));
e=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", d, e, d, e);
}
}
return 0;
}
|
27
|
13108
|
//By Dr.Z
int solve(float a,float b,float c); //????
int main()
{
cout<<fixed<<setprecision(5);
int n,i,j; //????
cin>>n; //?????n
float S[n][3]; //????????
for(i=0;i<=(n-1);i++) //??????
{
for(j=0;j<=2;j++) cin>>S[i][j];
}
for(i=0;i<=(n-1);i++)
{
solve(S[i][0],S[i][1],S[i][2]);
}
return 0;
}
int solve(float a,float b,float c)
{
float d=(b*b-4*a*c); //?????delta
float x,y; //??????
if(d>0) //?????
{
d=sqrt(d);
x=-b/a/2;
y=d/a/2;
cout<<"x1="<<(x+y)<<";x2="<<(x-y)<<endl;
}
else if(d==0) //?????
{
cout<<"x1=x2="<<(-b/a/2)<<endl;
}
else //?????
{
d=sqrt(-d);
x=-b/a/2;
if(x==0) x=abs(x);
y=abs(d/a/2);
cout<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
return 0;
}
|
27
|
13109
|
int main(int argc, char* argv[])
{
double x1,x2,a,b,c,s,q,w;
int n,j;
scanf("%d",&n);
for(j=1;j<=n;j++)
{scanf("%lf%lf%lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0)
{x1=(-b + sqrt(s))/(2*a);
x2=(-b - sqrt(s))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if(s==0)
{{if(b==0)
x1=x2=0;
else
x1=x2=-b/(2*a);}
printf("x1=x2=%.5lf\n",x1); }
else
{
q=-b/(2*a);
w=sqrt(-s)/(2*a);
{if(b==0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",q,w,q,w);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",q,w,q,w);}}
}
return 0;
}
|
27
|
13110
|
int main()
{
double n, x1, x2, a, b, c, i, delta;
cin >> n;
for (i = 1; i <= n; i ++)
{
cin >> a >> b >> c;
delta = b * b - 4 * a * c;
if (delta == 0)
{
x1 = x2 = (double)(- b / (2 * a));
printf("x1=x2=%.5lf\n", x1);
}
else if(delta > 0)
{
x1 = (double)(-b + sqrt(delta))/(2 * a);
x2 = (double)(-b - sqrt(delta))/(2 * a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (delta < 0)
{
delta = - delta;
double i, x;
i = sqrt(delta) / (2 * a);
x = -b / (2 * a);
if (x == - 0)
x = 0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", x, i, x, i);
}
}
return 0;
}
|
27
|
13111
|
int main()
{
int n, i;
double a, b, c, x1, x2;
cin >> n;
for( 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);
if(x1 == -0)
{
x1 = 0;
}
if(x2 == -0)
{
x2 = 0;
}
cout << fixed;
cout << "x1=" << setprecision(5) << x1 << ";" << "x2=" << setprecision(5) << x2 << endl;
}
if(b * b - 4 * a * c == 0)
{
x1 = (-b)/(2 * a);
if(x1 == -0)
{
x1 = 0;
}
cout << fixed;
cout << "x1=x2=" << setprecision(5) << x1 << endl;
}
if(b * b - 4 * a * c < 0)
{
x1 = (-b)/(2 * a);
x2 = sqrt(4 * a * c - b * b)/(2 * a);
if(x1 == -0)
{
x1 = 0;
}
if(x2 == -0)
{
x2 = 0;
}
cout << fixed;
cout << "x1=" << setprecision(5) << x1 << "+" << setprecision(5) << x2 << "i" << ";" << "x2=" << setprecision(5) << x1 << "-" << setprecision(5) << x2 << "i" <<endl;
}
}
return 0;
}
|
27
|
13112
|
//?????????
int main()
{
int n, i;
double a, b, c, x1, x2, real, imaginary;
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=(-b+sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n", x1);
}
else{
imaginary=(sqrt(-b*b+4*a*c))/(2*a);
real=(-b/(2*a))+1-1;
if(imaginary>=0){
printf("x1=%.5lf+%.5lfi;", real, imaginary);
printf("x2=%.5lf-%.5lfi\n", real, imaginary);
}
else{
imaginary=(-imaginary);
printf("x1=%.5lf-%.5lfi;", real, imaginary);
printf("x2=%.5lf+%.5lfi\n", real, imaginary);
}
}
}
return 0;
}
|
27
|
13113
|
float derta(float x,float y,float z)
{
return(y*y-4*x*z);
}
void main()
{
float a,b,c;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f%f%f",&a,&b,&c);
if(a!=0)
{
if(derta(a,b,c)==0)
{
printf("x1=x2=%.5f\n",-b/(2*a));
}
else if(derta(a,b,c)>0)
{
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt(derta(a,b,c)))/(2*a),(-b-sqrt(derta(a,b,c)))/(2*a));
}
else
{
if(-b/(2*a)==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",fabs(-b/(2*a)),sqrt(-derta(a,b,c))/(2*a),fabs(-b/(2*a)),sqrt(-derta(a,b,c))/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-derta(a,b,c))/(2*a),-b/(2*a),sqrt(-derta(a,b,c))/(2*a));
}
}
else printf("ERROR\n");
}
}
|
27
|
13114
|
//**************************************
//* ???????????? **
//* ?????? 1300012722 **
//* ???2013.10.10 **
//**************************************
int main()
{
int n , i=1 ; //?????????n
double a , b , c , x1 , x2 , delta , m; //????ax2 + bx + c =0????????????x1?x2?b*b-4*a*c??,-b/(2*a)d??m
cin >> n ; //??n??
while (i<=n)
{
cin >> a >> b >> c ; //???????
delta= b * b - 4 * a * c; //??delta??
if(delta > 0)
{
x1 = ( 0 - b + sqrt(delta) ) / (2 * a) ; //??x1??
x2 = ( 0 - b - sqrt(delta) ) / (2 * a) ; //??x2??
cout << fixed ;
cout << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl ; //??x1,x2??????????5?
}
else if(delta==0)
{
m = (0 - b) / ( 2 * a ) ; //??x1?x2??
cout << fixed ;
cout << setprecision(5) << "x1=x2=" << m << endl ; //??x1,x2??????????5?
}
else if(delta<0)
{
m= (0 - b) / ( 2 * a ) ;
cout << fixed ;
cout << setprecision(5) << "x1=" << m << "+" << sqrt(-delta) / (2*a) << "i" << ";" ; //??x1??
cout << setprecision(5) << "x2=" << m << "-" << sqrt(-delta) / (2*a) << "i" << endl; //??x2??
}
i++; //i???1
}
return 0;
}
|
27
|
13115
|
int main()
{
int n,ni;
cin>>n;
for(ni=1;ni<=n;ni=ni+1)
{
double a,b,c,x1,x2,t;
cin>>a>>b>>c;
t=(-b)/(2*a);
if(fabs(t) < 1e-9)
t= 0;
if (b*b-4*a*c>0)
{
cout<<"x1=" ;
printf("%.5f",(t + sqrt(b*b-4*a*c)/(2*a)));
cout<<";";
cout<<"x2=";
printf("%.5f",(t - sqrt(b*b-4*a*c)/(2*a)));
cout<<endl;
}
else if (b*b-4*a*c==0)
{
cout<<"x1=x2=";
printf("%.5f", t);
cout<<endl;
}
else
{
cout<<"x1=";
printf("%.5f", t);
cout<<"+";
printf("%.5f",(sqrt(4*a*c-b*b)/(2*a)));
cout<<"i;";
cout<<"x2=";
printf("%.5f",t);
cout<<"-";
printf("%.5f",(sqrt(4*a*c-b*b)/(2*a)));
cout<<'i'<<endl;
}
}
return 0;
}
|
27
|
13116
|
int main()
{
int num;
double *d,*e,*f,x1,x2,x3,x4,a,b,c;
scanf("%d",&num);
d=(double *)malloc(num*sizeof(double));
e=(double *)malloc(num*sizeof(double));
f=(double *)malloc(num*sizeof(double));
int i;
for(i=0;i<num;i++)
{
scanf("%lf %lf %lf",d+i,e+i,f+i);
}
for(i=0;i<num;i++)
{
a=d[i];
b=e[i];
c=f[i];
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a)+0;
x2 = (-b - sqrt(b*b-4*a*c))/(2*a)+0;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(b*b-4*a*c==0)
{
x1 = (-b)/(2*a)+0;
printf("x1=x2=%.5lf\n",x1);
}
if(b*b-4*a*c<0)
{
x1 = (-b)/(2*a)+0;
x2 = (-b)/(2*a)+0;
x3=sqrt(-b*b+4*a*c)/(2*a);
x4=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x3,x2,x4);
}
}
return 0;
}
|
27
|
13117
|
/*
* 1.cpp
*
* Created on: 2012-10-12
* Author: 99003
*/
int main(){
int n;
double a,b,c,delta;
double x1,x2;
cin>>n;//??????
while(n>0){
cin>>a>>b>>c; //??3???
delta=b*b-4*a*c;//??delta
if(delta>0){ //?????
x1=(0.000-b+sqrt(delta))/2.0/a;
x2=(0.000-b-sqrt(delta))/2.0/a;
cout<<"x1=";//????
printf("%.5f",x1);
cout<<";x2=";
printf("%.5f",x2);
cout<<endl;
}
else if(delta==0){ //??????
x1=(0.00000000000000-b)/2/a;
cout<<"x1=x2=";
printf("%.5f",x1);
cout<<endl;
}
else if(delta<0){ //??????
x1=(0.00000000000000-b)/2/a;
x2=sqrt(0.000000000000-delta)/2/a;
cout<<"x1=";
printf("%.5f",x1);
cout<<"+";
printf("%.5f",x2);
cout<<"i;x2=";
printf("%.5f",x1);
cout<<"-";
printf("%.5f",x2);
cout<<"i"<<endl;
}
n=n-1;
}
return 0;
}
|
27
|
13118
|
int main()
{
int n;
cin>>n;
for(int i=0;i<n;i++)
{
double a,b,c;
cin>>a>>b>>c;
double delta,x1,x2;
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) ;
cout<<"x1=";
printf("%.5f", x1);
cout<<";x2=";
printf("%.5f",x2);
cout<<endl;
}
else if(delta==0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a) ;
cout<<"x1=x2=";
printf("%.5f", x1);
cout<<endl;
}
else if(delta<0)
{
x1 = (-b)/(2*a) ;
if(x1>-0.00001&&x1<=0)
x1=-x1+0.0000001;
double i;
i=sqrt(-delta)/(2*a);
cout<<"x1=";
printf("%.5f", x1);
cout<<"+";
printf("%.5f", i);
cout<<"i;x2=";
printf("%.5f", x1);
cout<<"-";
printf("%.5f", i);
cout<<"i"<<endl;
}
}
return 0;
}
|
27
|
13119
|
int main()
{
int n,j;
double a[20],b[20],c[20],x1[20],x2[20];
scanf("%d",&n);
for(j=0;j<=n-1;j++)
{
scanf("%lf%lf%lf",&a[j],&b[j],&c[j]);
}
for(j=0;j<=n-1;j++)
{
if(b[j]*b[j]-4*a[j]*c[j]>=0){
if(b[j]*b[j]-4*a[j]*c[j]>0){
x1[j]=(-b[j]+sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2[j]=(-b[j]-sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1[j],x2[j]);
}else {
x1[j]=x2[j]=-b[j]/(2*a[j]);
printf("x1=x2=%.5lf\n",x1[j]);
}
}
else {x1[j]=-b[j]/(2*a[j]);x2[j]=sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j]);if(-b[j]/(2*a[j])!=0){
printf("x1=%.5lf",x1[j]);printf("+");printf("%.5lf",x2[j]);printf("i;");
printf("x2=%.5lf",x1[j]);printf("-");printf("%.5lf",x2[j]);printf("i\n");}
else{printf("x1=%.5lf",-x1[j]);printf("+");printf("%.5lf",x2[j]);printf("i;");
printf("x2=%.5lf",-x1[j]);printf("-");printf("%.5lf",x2[j]);printf("i\n");}
}
}
return 0;
}
|
27
|
13120
|
int main()
{
double a,b,c,p,p1,x1,x2,y1,z;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
p=b*b-4*a*c;
if(p>0)
{
x1=(-b+sqrt(p))/(2*a);
x2=(-b-sqrt(p))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(p==0)
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
p1=-p;
y1=-b/(2*a);
z=sqrt(p1)/(2*a);
printf("x1=%.5lf+%.5lfi;",y1,z);
printf("x2=%.5lf-%.5lfi\n",y1,z);
}
}
return 0;
}
|
27
|
13121
|
int main()
{int i,n;
float a,b,c,d;
double disc,x1,x2,rpart,ipart;
scanf("%d",&n);
for(i=1;i<=n;i++)
{scanf("%f %f %f",&a,&b,&c);
disc=b*b-4*a*c;
d=-b/(2*a);
if(fabs(disc)<=1e-6)
{printf("x1=x2=%.5lf\n",d);
}
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
{rpart=-b/(2*a);
ipart=sqrt(-disc)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",rpart,ipart,rpart,ipart);
}
}
return 0;
}
|
27
|
13122
|
int main(int argc, char* argv[])
{
int n,j;
scanf("%d",&n);
for(j=1;j<=n;j++){
double a,b,c,d,e,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
e=-(b/(2*a));
if(d>0){
x1=e+(sqrt(d))/(2*a);
x2=e-(sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0){
x1=e;
printf("x1=x2=%.5lf\n",x1);
}
if(d<0){
d=-d;
if(b!=0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,(sqrt(d))/(2*a),e,(sqrt(d))/(2*a));
}
if(b==0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",b,(sqrt(d))/(2*a),b,(sqrt(d))/(2*a));
}
}
}
return 0;
}
|
27
|
13123
|
/*
* ?????????.cpp
*
* Created on: 2013-9-30
* Author: 111
*/
int main()
{
int n; //????
double a,b,c,x1,x2,shibu,xubu,delt;
cin>>n;
for (int i=1;i<=n;i++) //?n?????
{
cin>>a>>b>>c;
delt=b*b-4*a*c; //delt????
if (delt>0)
{
x1=(-b+sqrt(delt))/(2*a);
x2=(-b-sqrt(delt))/(2*a); //??????????
cout<<fixed<<setprecision(5); //????5???
cout<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else
{
if (delt==0)
{ //??????????
x1=-b/(2*a);
x2=-b/(2*a);
cout<<fixed<<setprecision(5);
cout<<"x1=x2="<<x1<<endl;
}
else
{
shibu=-b/(2*a); //??????
xubu=sqrt(-delt)/(2*a);
cout<<fixed<<setprecision(5);
if (shibu==-0)
{
shibu=0;
}
cout<<"x1="<<shibu<<"+"<<xubu<<"i;"<<"x2="<<shibu<<"-"<<xubu<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13124
|
void main()
{
int i,n;
scanf("%d/n",&n);
double x1,x2,a,b,c,x,y;
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
x=(sqrt(b*b-4*a*c))/(2*a);
if (x>0)
{
x1=-b/(2*a)+x;
x2=-b/(2*a)-x;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (x==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
y=(sqrt(-b*b+4*a*c))/(2*a);
x1=-b/(2*a);
printf("x1=%.5lf",x1);
printf("+%.5lf",y);
printf("i;");
printf("x2=%.5lf",x1);
printf("-%.5lf",y);
printf("i\n");
}
}
}
|
27
|
13125
|
int main(int argc, char* argv[])
{
float a[50],b[50],c[50];
int n,i;
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=-0.00000;
else m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(2*a[i]);
if (delta==0)
{ printf("x1=x2=%.5lf\n",m);
}
else if(delta>0)
{ x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else{
printf("x1=%.5lf+%.5fi;",m,n);
printf("x2=%.5lf-%.5fi\n",m,n);
}
}
}
return 0;
}
|
27
|
13126
|
int main()
{
int n,i;
double a,b,c,x1,x2,d;
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)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
d=sqrt(4*a*c-b*b)/(2*a);
printf("x1=-%.5lf+%.5lfi;x2=-%.5lf-%.5lfi\n",b/(2*a),d,b/(2*a),d);
}
}
return 0;
}
|
27
|
13127
|
int main()
{
int n,i;
double a[100],b[100],c[100],x1,x2,y1;
cin>>n;
for(i=0;i<n;i++)
{
cin>>a[i]>>b[i]>>c[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]);
cout<<"x1="<<fixed<<setprecision(5)<<x1<<";"<<"x2="<<x2<<endl;
}
else if((b[i]*b[i]-4*a[i]*c[i])==0)
{
x1=(-b[i]+0)/(2*a[i]);
x2=x1;
cout<<"x1=x2="<<fixed<<setprecision(5)<<x1<<endl;
}
else if((b[i]*b[i]-4*a[i]*c[i])<0)
{
if(b[i]==0)y1=0;
else
{
y1=(-b[i])/(2*a[i]);
}
x1=(sqrt(abs(b[i]*b[i]-4*a[i]*c[i])))/(2*a[i]);
cout<<"x1="<<fixed<<setprecision(5)<<y1<<"+"<<x1<<"i"<<";"<<"x2="<<y1<<"-"<<x1<<"i"<<endl;
}
}
return 0;
}
|
27
|
13128
|
/*
* 1.cpp
*
* Created on: 2012-11-1
* Author: AK
*/
int main(){
int n;
double a,b,c,p;
cin>>n;
for(;n>=1;n--){
cin>>a>>b>>c;
p=b*b-4*a*c;
if(p>0) cout<<"x1="<<fixed<<setprecision(5)<<0+(-b+sqrt(p))/(2*a)<<";x2="<<0+(-b-sqrt(p))/(2*a)<<endl;
else if(p==0) cout<<"x1=x2="<<fixed<<setprecision(5)<<0+(-b)/(2*a)<<endl;
else cout<<fixed<<setprecision(5)<<"x1="<<0+(-b)/(2*a)<<'+'<<sqrt(-p)/(2*a)<<"i;x2="<<0+(-b)/(2*a)<<'-'<<sqrt(-p)/(2*a)<<"i"<<endl;
}
return 0;
}
|
27
|
13129
|
int main()
{
int n,h=1;
double a,b,c,e;
double x1,x2,y;
scanf("%d",&n);
for(h=1;h<=n;h++)
{
scanf("%lf %lf %lf",&a,&b,&c);
y=b*b-4*a*c;
if(y>0)
{
x1=(-b+sqrt(y))/(2*a);
x2=(-b-sqrt(y))/(2*a);
if(c==0)
printf("x1=0.00000;x2=%.5f\n",x2);
else
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
if(y==0)
{
x1=x2=(-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
e=(sqrt(-y))/(2*a);
if(b==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",0.00000,e,0.00000,e);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a),e,(-b)/(2*a),e);
}
}
getchar();
getchar();
getchar();
}
|
27
|
13130
|
main()
{ double a,b,c,a1,a2;
int n,d;
d = 1;
scanf ("%d",&n);
while (d <= n)
{
scanf ("%lf %lf %lf",&a,&b,&c);
a1 = -b/(2*a);
if (a1 == 0)
a1 = 0;
else a1 = -b/(2*a);
if ((b*b-4*a*c)==0)
{a2 = 0;
printf ("x1=x2=%.5lf\n",a1);}
else if ((b*b-4*a*c)<0)
{a2 = (sqrt ( 4 * a* c-b * b))/(2 * a);
printf ("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",a1,a2,a1,a2);}
else if ((b*b-4*a*c)>0)
{a2 = (sqrt (b * b - 4 * a* c))/(2 * a);
printf ("x1=%.5lf;x2=%.5lf\n",a1+a2,a1-a2);}
d = d + 1;
}
}
|
27
|
13131
|
int main()
{ int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
double a,b,c,d,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
d=(double)b*b-4*a*c;
if(d<0)
{double m,n;
m=-b/(2*a);
n=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
else
{
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=%.5lf;x2=%.5lf\n",x1,x2);
else
printf("x1=x2=%.5lf\n",x1,x2);
}
}
return 0;
}
|
27
|
13132
|
int main()
{
int n;
int i;
scanf("%d",&n);
double a[100],b[100],c[100],x1[100],x2[100],re[100],im[100];
double dlta[100];
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
dlta[i]=b[i]*b[i]-4*a[i]*c[i];
if(dlta[i]==0)
{
x1[i]=-b[i]/a[i]/2;
printf("x1=x2=%.5lf\n",x1[i]);
}
else if(dlta[i]<0)
{
im[i]=sqrt(0-dlta[i])/2/a[i];
re[i]=-b[i]/a[i]/2;
if(re[i]==0)
{
re[i]=0;
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",re[i],im[i],re[i],im[i]);
}
else
{
x1[i]=(-b[i]+sqrt(dlta[i]))/2/a[i];
x2[i]=(-b[i]-sqrt(dlta[i]))/2/a[i];
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
}
}
|
27
|
13133
|
int main()
{
double a,b,c,x1,x2,del,m,l;
int n,i;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
del=b*b-4*a*c;m=-b/(2*a);
if (del>1e-6)
{
l=sqrt(del)/(2*a);
x1=m+l;
x2=m-l;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (fabs(del)<=1e-6) printf("x1=x2=%.5lf\n",m);
else
{
l=sqrt(-del)/(2*a);
if (m!=0) printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,l,m,l);
else printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",l,l);
}
}
return 0;
}
|
27
|
13134
|
int main ()
{
int n;
cin >>n;
for (int i=1;i<=n;i++)
{
double a,b,c,d,e,x,y;
cin >>a>>b>>c;
d=b*b-4*a*c;
e=-b/2/a;
if (e==-0)
e=0;
if (d>0)
{
x=e+sqrt(d)/2/a;
y=e-sqrt(d)/2/a;
cout <<fixed<<setprecision(5)<<"x1="<<x<<";x2="<<y<<endl;
}
if (d==0)
{
cout <<fixed<<setprecision(5)<<"x1=x2="<<e<<endl;
}
if (d<0)
{
x=sqrt(-d)/2/a;
cout <<fixed<<setprecision(5)<<"x1="<<e<<"+"<<x<<"i;x2="<<e<<"-"<<x<<"i"<<endl;
}
}
return 0;
}
|
27
|
13135
|
int main()
{
double a, b, c, x1, x2, n;
cin >> n ;
for (double k = 1 ; k <= n ; k++)
{
cin >> a >> b >> c ;
x1 = (-b + sqrt(b * b - 4 * a * c)) / (2 * a) ;
x2 = (-b - sqrt(b * b - 4 * a * c)) / (2 * a) ;
if (sqrt(b * b - 4 * a * c) > 0)
{
cout << "x1=" ;
printf ("%.5f",x1) ;
cout << ";" << "x2=" ;
printf ("%.5f",x2) ;
cout << endl ;
}
else
{
if (sqrt(b * b - 4 * a * c) == 0)
{
cout << "x1=x2=" ;
printf ("%.5f",x1) ;
cout << endl ;
}
else
{
cout << "x1=" ;
if (b == 0)
printf ("%.5f",(b / (2 * a))) ;
else
printf ("%.5f",(-b / (2 * a))) ;
cout << "+" ;
printf ("%.5f",(sqrt(abs(b * b - 4 * a * c)) / (2 * a)));
cout << "i" << ";" ;
cout << "x2=" ;
if (b == 0)
printf ("%.5f",(b / (2 * a))) ;
else
printf ("%.5f",(-b / (2 * a))) ;
cout << "-" ;
printf ("%.5f",(sqrt(abs(b * b - 4 * a * c)) / (2 * a)));
cout << "i" ;
cout << endl ;
}
}
}
return 0;
}
|
27
|
13136
|
int main()
{
int i,j,n;
float a[100],b[100],c[100],d[100];
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f",&a[i]);
scanf("%f",&b[i]);
scanf("%f",&c[i]);
}
for(i=0;i<n;i++)
{
d[i]=b[i]*b[i]-4*a[i]*c[i];
if(d[i]==0)
printf("x1=x2=%.5f\n",(-b[i])/(2*a[i]));
if(d[i]>0&&c[i]==0)
printf("x1=0.00000;x2=%.5f\n", (-b[i]-sqrt(d[i]))/(2*a[i]));
if(d[i]>0&&c[i]!=0)
printf("x1=%.5f;x2=%.5f\n",(-b[i]+sqrt(d[i]))/(2*a[i]), (-b[i]-sqrt(d[i]))/(2*a[i]));
if(d[i]<0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b[i]/(2*a[i]),sqrt(-d[i])/(2*a[i]),-b[i]/(2*a[i]),sqrt(-d[i])/(2*a[i]));
}
return 0;
}
|
27
|
13137
|
main()
{
int n,i;
scanf("%d",&n);
double a,b,c,d;
for (i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d==0)
printf("x1=x2=%.5lf\n",-b/(2*a));
else
{ if (d>0)
if ((-b)/(2*a)<0.00001 && ((-b)/(2*a))>-0.00001 )
printf("x1=0.00000+%.5lf;x2=0.00000-%.5lf\n",sqrt(d)/(2*a),sqrt(d)/(2*a));
else
printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(d))/(2*a),(-b-sqrt(d))/(2*a));
else if ((-b)/(2*a)<0.00001&& (-b)/(2*a)>-0.00001 )
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(-d)/(2*a),sqrt(-d)/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),sqrt(-d)/(2*a),-b/(2*a),sqrt(-d)/(2*a));
}
}
}
|
27
|
13138
|
int main()
{
int number;
float a, b, c;
double delta=0;
scanf("%d",&number);
while ( number -- )
{
scanf("%f %f %f", &a, &b, &c);
delta = b*b-4*a*c;
if ( delta > 0 )
{
double x1,x2;
x1 = (-b + sqrt(delta))/(2*a);
x2 = (-b - sqrt(delta))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
if ( delta == 0 )
{
double x = (-b)/(2*a);
printf("x1=x2=%.5f\n", x);
}
else
{
delta = -delta;if(b==0){double xfront=b/(2*a);
double xbehind = sqrt(delta)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", xfront, xbehind, xfront, xbehind);}else{ double xfront = (-b)/(2*a);double xbehind = sqrt(delta)/(2*a);printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", xfront, xbehind, xfront, xbehind);}
}
}
}
}
|
27
|
13139
|
int main()
{
int i,j;
double a,b,c,d,e,f,m,n,h;
scanf ("%d\n",&j);
for (i=1;i<=j;i++)
{
scanf ("%lf%lf%lf",&a,&b,&c);
h=b*b-4*a*c;
if (h>0)
{
d=(-b+sqrt(h))/(2*a);
e=(-b-sqrt(h))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",d,e);}
if (h==0)
{
f=(-b)/(2*a);
printf ("x1=x2=%.5lf\n",f);}
if (h<0)
{
m=(-b)/(2*a); n=sqrt(-h)/(2*a);
printf ("x1=%.5lf+%.5lfi;",m,n);
printf ("x2=%.5lf-%.5lfi\n",m,n);
}}
return 0;
}
|
27
|
13140
|
void main()
{
int n,g;
scanf("%d",&n);
double a[100],b[100],c[100],x1,x2,disc,rp,ip;
for(g=0;g<=n-1;g++)
{
scanf("%lf%lf%lf",&a[g],&b[g],&c[g]);
}
for(g=0;g<=n-1;g++)
{
disc=b[g]*b[g]-4*a[g]*c[g];
if(fabs(disc)<=1e-6)
{
printf("x1=x2=%.5lf\n",-b[g]/(2*a[g]));
}
else
if(disc>1e-6)
{
x1=(-b[g]+sqrt(disc))/(2*a[g]);
x2=(-b[g]-sqrt(disc))/(2*a[g]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
if(b[g]==0)
{
rp=0;
ip=sqrt(-disc)/(2*a[g]);
printf("x1=%.5lf+%.5lfi;",rp,ip);
printf("x2=%.5lf-%.5lfi\n",rp,ip);
}
else
{
rp=-b[g]/(2*a[g]);
ip=sqrt(-disc)/(2*a[g]);
printf("x1=%.5lf+%.5lfi;",rp,ip);
printf("x2=%.5lf-%.5lfi\n",rp,ip);
}
}
}
}
|
27
|
13141
|
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int i;
for(i=1;i<=n;i++){
double a, b,c,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
if ((b*b-4*a*c)==0){
x1=-(b/(2*a));
printf("x1=x2=%.5lf\n",x1);
}
else{
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{
double m,n;
m=-b/(2*a);
if (b==0){
m=0.00000;
}
n=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
}
}
return 0;
}
|
27
|
13142
|
main()
{
int i,n;
scanf("%d",&n);
double a[n],b,c,x[n],y[n];
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b,&c);
y[i]=(b*b-4*a[i]*c);
if(b==0)
x[i]=(b)/(2*a[i]);
else
x[i]=(-b)/(2*a[i]);
}
for(i=0;i<n;i++)
{
if(y[i]==0)
printf("x1=x2=%.5f\n",x[i]);
else if (y[i]>0)
{
y[i]=sqrt(y[i])/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x[i]+y[i],x[i]-y[i]);
}
else
{
y[i]=sqrt(-y[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x[i],y[i],x[i],y[i]);
}
}
}
|
27
|
13143
|
int main()
{
int n,ri;
double a, b, c, d;
scanf("%d", &n);
for(ri = 1; ri <= n; ri++){
scanf("%lf %lf %lf", &a, &b, &c);
d=b*b-4*a*c;
if(a==0){if(b==0){if(c==0){printf("???????????!\n");}
else{printf("a?b?0?c??0??????\n");}}
else{printf("x=%.5f\n", -c/b);}
}
else{if(d>0){printf("x1=%.5f;", (-b+sqrt(d))/(2*a));
printf("x2=%.5f\n", (-b-sqrt(d))/(2*a));}
else{if(d==0){printf("x1=x2=%.5f\n", (-b+sqrt(d))/(2*a));}
else{if(d<0){if(b==0){printf("x1=%.5f+%.5fi;",b/(2*a), sqrt(-d)/(2*a));printf("x2=%.5f-%.5fi\n", b/(2*a), sqrt(-d)/(2*a));}
else{if(d<0){if(b!=0){printf("x1=%.5f+%.5fi;",-b/(2*a), sqrt(-d)/(2*a));printf("x2=%.5f-%.5fi\n", -b/(2*a), sqrt(-d)/(2*a));}
}
}
}
}
}
}
}
}
|
27
|
13144
|
int main()
{
int n,i,j;
double a[100][3],x1,x2,y;
scanf("%d",&n);
for(i=0;i<n;i++)
{
for(j=0;j<3;j++)
{
scanf("%lf",&a[i][j]);
}
}
for(i=0;i<n;i++)
{
if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]>0)
{
x1=(-a[i][1]+sqrt(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]))/(2*a[i][0]);
x2=(-a[i][1]-sqrt(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]))/(2*a[i][0]);
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]==0)
{
x1=(-a[i][1])/(2*a[i][0]);
printf("x1=x2=%.5lf\n",x1);
}
if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]<0)
{
if(a[i][1]==0)
{
y=(sqrt(-a[i][1]*a[i][1]+4*a[i][0]*a[i][2]))/(2*a[i][0]);
printf("x1=0.00000+%.5lfi;",y);
printf("x2=0.00000-%.5lfi\n",y);
}
else if(a[i][1]!=0)
{
x1=(-a[i][1])/(2*a[i][0]);
y=(sqrt(-a[i][1]*a[i][1]+4*a[i][0]*a[i][2]))/(2*a[i][0]);
printf("x1=%.5lf+%.5lfi;",x1,y);
printf("x2=%.5lf-%.5lfi\n",x1,y);
}
}
}
return 0;
}
|
27
|
13145
|
int main()
{
int n,k,j;
double num[100][100]={0},a,b,c,x1,x2,i;
scanf("%d",&n);
i=sqrt(-1);
for(k=0;k<=n-1;k++)
{
scanf("%lf %lf %lf",&num[k][0],&num[k][1],&num[k][2]);
a=num[k][0];
b=num[k][1];
c=num[k][2];
if((b*b-4*a*c)>=0)
{
num[k][3]= (-b + sqrt(b*b-4*a*c))/(2*a);
num[k][4]= (-b - sqrt(b*b-4*a*c))/(2*a);
}
else
{
if(b==0.00000)
{num[k][3]=0.00000;}
else
{
num[k][3]= (-b)/(2*a);
}
num[k][4]=sqrt(4*a*c-b*b)/(2*a);
num[k][5]=sqrt( 4*a*c-b*b)/(2*a);
}
//printf("\n");//
}
for(j=0;j<=n-1;j++)
{
k=j;
if(num[k][1]*num[k][1]-4*num[k][0]*num[k][2]>=0)
{
if(num[k][3]!=num[k][4])
{printf("x1=%.5lf;x2=%.5lf\n",num[k][3],num[k][4]);}
else {printf("x1=x2=%.5lf\n",num[k][3]);}
}
else {printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",num[k][3],num[k][4],num[k][3],num[k][5]);}
}
getchar();
getchar();
return 0;
}
|
27
|
13146
|
int main ()
{
int n ,j;
cin >> n;
double cha , x1,x2;
float a[100], b[100], c[100];
for(j = 0 ; j < n; j++)
{
cin >> a[j] >> b[j] >> c[j];
cha =(double) b[j]* b[j] - 4 * a[j] * c[j];
if(cha > 0)
{
x1 = (-b[j] + sqrt(cha))/(2*a[j]);
x2 = (-b[j] - sqrt(cha))/(2*a[j]);
cout <<fixed << setprecision(5)<< "x1="<< x1 << ";" <<"x2="<< x2 << endl;
}
else if (cha == 0)
cout <<fixed << setprecision(5) <<"x1=x2="<<-b[j]/(2*a[j])<<endl;
else
{ double i = -b[j]/(2*a[j]);
cout << fixed << setprecision(5) <<"x1="<<i<<"+"<<sqrt(-cha)/(2*a[j])<<"i"<<";"<<"x2="<<i<<"-"<<sqrt(-cha)/(2*a[j])<<"i"<<endl;
}
}
return 0;
}
|
27
|
13147
|
main (){
int n,i;
double delta,p,q,x1,x2;
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]);
delta=b[i]*b[i]-4*a[i]*c[i];
p=-(b[i]/(2*a[i]));
q=sqrt(fabs(delta))/(2*a[i]);
if(delta==0)
{
printf("x1=x2=%.5f\n",p);}
else if(delta>0)
{
x1=p+q;
x2=p-q;
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{
printf("x1=%.5f+%.5fi;",p,q);
printf("x2=%.5f-%.5fi\n",p,q);
}
}
return 0;
}
|
27
|
13148
|
/*
* return.cpp
*
* Created on: 2014-1-25
* Author: ???
*/
int main()
{
int n;
double a,b,c,d;
cin>>n;
cout<<fixed<<setprecision(5);
for(int i=0;i<n;i++)
{
cin>>a>>b>>c;
if(b==0)
b=-b;
d=b*b-4*a*c;
if(d==0)
{
cout<<"x1=x2="<<(-b)/(2*a)<<endl;
}
else if(d>0)
{
cout<<"x1="<<(-b+sqrt(d))/(2*a)<<";x2="<<(-b-sqrt(d))/(2*a)<<endl;
}
else
{
double xd=sqrt(-d)/(2*a);
cout<<"x1="<<(-b)/(2*a)<<'+'<<xd<<"i;x2="<<(-b)/(2*a)<<'-'<<xd<<'i'<<endl;
}
}
return 0;
}
|
27
|
13149
|
void main()
{
int n,i=1;
double a,b,c,x1,x2,d,e,y,z;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d>0)
{
e=sqrt(d);
x1=(-b+e)/(2*a);
x2=(-b-e)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if (d==0)
{
e=sqrt(d);
x1=x2=(-b+e)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if (d<0)
{
y=-b/(2*a);
z=sqrt(-d)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",y,z,y,z);
}
}
}
|
27
|
13150
|
/*
* 004.cpp
*
* Created on: 2012-9-28
* Author: ???
* ??:???????????????
*/
int main(){
int n;
double a,b,c,delta,x1,x2,x;
cin >> n;
while(n--){
cin >> a >> b >> c;
delta=b*b-4*a*c;
if (delta>=0){ //??????
if (delta>0){
x1=(-b + sqrt(delta))/(2*a);
x2=(-b - sqrt(delta))/(2*a);
if (x1==0) x1=0;
if (x2==0) x2=0;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
} else {
x1=(-b)/(2*a);
if (x1==0) x1=0;
printf("x1=x2=%.5f\n", x1);
}
}else {
x1=(-b)/(2*a);
x=sqrt(-delta)/(2*a);
if (x1==0) x1=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x,x1,x);
}
}
return 0;
}
|
27
|
13151
|
int main()
{
int n,i;
double a,b,c,d,e;
scanf("%d\n",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
e=(-b/(2*a));
if(d>0)
{
printf("x1=%.5lf;x2=%.5lf\n",e+sqrt(d)/(2*a),e-sqrt(d)/(2*a));
}
else if(d==0)
{
printf("x1=x2=%.5lf\n",e);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,sqrt(-d)/(2*a),e,sqrt(-d)/(2*a));
}
}
return 0;
}
|
27
|
13152
|
int main()
{
int n;
float a,b,c;
scanf("%d",&n);
while(n--){
scanf("%f %f %f",&a,&b,&c);
if((b*b-4*a*c)==0)
printf("x1=x2=%.5f\n",-b/(2*a));
if((b*b-4*a*c)>0)
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt((b*b-4*a*c)))/(2*a),(-b-sqrt((b*b-4*a*c)))/(2*a));
if((b*b-4*a*c)<0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),(sqrt((-b*b+4*a*c))/(2*a)),-b/(2*a),(sqrt((-b*b+4*a*c))/(2*a)));
}
return 0;
}
|
27
|
13153
|
main()
{
int n,i;
float a,b,c;
double x,y,z,x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%f %f %f",&a,&b,&c);
if(fabs(b*b-4*a*c)<1e-6)
{
x1=-b/(2*a),x2=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else if(b*b-4*a*c>1e-6)
{
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
{
x=-b/(2*a),y=sqrt(4*a*c-b*b)/(2*a);
if(fabs(x)<1e-6)x=-x;
printf("x1=%0.5f+%0.5fi;x2=%0.5f-%0.5fi\n",x,y,x,y);
}
}
}
|
27
|
13154
|
int main()
{
double a,b,c;
double x1,x2;
int n;
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 = (-b)/(2*a);
x2 = (-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
if (b==0)
{
cout<<fixed<<setprecision(5)<<"x1="<<(0)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<";"<<"x2="<<(0)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<";"<<"x2="<<(-b)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13155
|
int main()
{
int n,k;
double a[100],b[100],c[100],x1,x2,d;
cin>>n;
for (k=0;k<n;k++)
{
cin>>a[k]>>b[k]>>c[k];
d=b[k]*b[k]-4*a[k]*c[k];
if (d>0)
x1=(-b[k]+sqrt(d))/(2*a[k]),
x2=(-b[k]-sqrt(d))/(2*a[k]),
printf("x1=%.5f;x2=%.5f\n",x1,x2);
else if (d==0)
x1=x2=-b[k]/(2*a[k]),
printf("x1=x2=%.5f\n",x1);
else
d=sqrt(-d)/(2*a[k]),
x1=x2=-b[k]/(2*a[k]),
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,d,x2,d);
}
return 0;
}
|
27
|
13156
|
int main()
{
double a,b,c;
int n;
cin>>n;
for(int i=1;i<=n;i++){
cin>>a>>b>>c;
double delta=b*b-4*a*c;
if(delta==0){cout<<"x1=x2=";//?????Delta
printf("%.5f",((-b/(2*a))));
cout<<endl;}
else if(delta>0){
cout<<"x1=";
printf("%.5f",((-b+sqrt(delta))/(2*a)));
cout<<";"<<"x2=";
printf("%.5f",((-b-sqrt(delta))/(2*a)));
cout<<endl;}
if(delta<0){
delta=-delta;
cout<<"x1=";
if(b==0){
printf("%.5f",(b/(2*a)));}
else {printf("%.5f",(-b/(2*a)));}
cout<<"+";printf("%.5f",(sqrt(delta)/(2*a)));
cout<<"i"<< ";x2=";
if(b==0){
printf("%.5f",(b/(2*a)));}
else {printf("%.5f",(-b/(2*a)));}
cout<<"-";
printf("%.5f",(sqrt(delta)/2/a));
cout<<"i"<< endl;
}} return 0;
}
|
27
|
13157
|
int main()
{int n,i;
double a,b,c,x1,x2;
cin>>n;
for (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",x2);cout<<endl;} else
if (b*b-4*a*c==0){x1=(-b+sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=x2=";printf("%.5f",x1);cout<<endl;}else
{x1=-b/(2*a);x2=(sqrt(4*a*c-b*b))/(2*a);
if (x2<0) x2=-x2;
if (x1==-0) x1=0;
cout<<"x1=";printf("%.5f",x1);cout<<"+";printf("%.5f",x2);cout<<"i;";
cout<<"x2=";printf("%.5f",x1);cout<<"-";printf("%.5f",x2);cout<<"i"<<endl;
}
}
}
|
27
|
13158
|
//****************************
//??????????????
//?????? 1300012849
//???2013?10?14?
//****************************
int main ()
{
int n , i ; //??????n
double a , b , c ; //????????????????a?b?c
double delta , x1 , x2 , k1 , k2; //????delta?????x1,x2 ?k1, k2?????????????
cin >> n ; //????????n
for ( i = 1 ; i <= n ; i++ ) //?n???
{
cin >> a >> b >> c ; //????a?b?c
delta = b * b - 4 * a * c ; //?????
if ( delta > 0 ) //??????0????????????????
{
x1 = ( -b + sqrt ( delta ) ) / ( 2 * a ) ;
x2 = ( -b - sqrt ( delta ) ) / ( 2 * a ) ;
if ( x1 < 0.000001 && x1 > -0.000001) //???????-0.00000??0.00000????
{x1 = 0 ;}
cout<< fixed ; //???????????????5??????????
cout << setprecision(5) << "x1="<< x1 <<";"<< "x2="<< x2 << endl ;
}
else if ( delta == 0 ) //??????0????
{
x1 = -b / ( 2 * a ) ;
x2 = -b / ( 2 * a ) ;
if ( x1 < 0.000001 && x1 > -0.000001)
x1 = 0 ;
if ( x2 < 0.000001 && x1 > -0.000001)
x2 = 0 ;
cout << fixed ;
cout << setprecision(5) << "x1=x2="<< x1 << endl ;
}
else if ( delta < 0 ) //??????0??????????
{
k1 = -b / ( 2 * a ) ;
k2 = sqrt ( -delta) / ( 2 * a ) ;
if ( k1 < 0.000001 && k1 > -0.000001)
k1 = 0 ;
if ( k2 < 0.000001 && k1 > -0.000001)
k2 = 0 ;
cout << fixed;
cout <<setprecision(5)<<"x1="<< k1 << "+"<< k2 << "i;x2="<<k1 <<"-"<< k2 << "i"<<endl ;
}
}
return 0 ; //?????????0
}
|
27
|
13159
|
int main(int argc, char* argv[])
{
int i;
int n;
double e,f;
double a,b,c;
double x1,x2;
scanf("%d",&n);
for(i=1;i<n+1;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=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==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){
if(b==0){
e=0;
f=(sqrt(4*a*c-b*b))/(2*a);
}
else{
e=-b/(2*a);
f=(sqrt(4*a*c-b*b))/(2*a);
}
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
return 0;
}
|
27
|
13160
|
//************************************************************
//*9.14???????????? ***********
//*????? 1100012844 ***********
//*???2011.9.16 ***********
//*?????????,?????100??,??! ***********
//************************************************************
int main()
{
int n,k; //??n,k?????
double a,b,c; //??a,b,c???????
double d,x1,x2,x3; //??d,x1,x2,x3???????
cin >> n; //??????n
for (k=0;k<n;k++) //for?????????
{
cin >> a >> b >> c; //??????a,b,c
d = b*b-4*a*c; //??????????d
if (d>=0) //?????????????0
if (d>0) //???????0,???????
{ x1 = (-b+sqrt(d))/(2*a); //??????x1??
x2 = (-b-sqrt(d))/(2*a); //??????x2??
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl; //??x1,x2??
}
else //??????0,???????
{ x1 = (-b)/(2*a); //??????????
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl; //????
}
else //???????0,???????
{ x3 = (-b)/(2*a); //?????x3
x1 = sqrt(-d)/(2*a); //?x1?????
x2 = -sqrt(-d)/(2*a); //?x2?????
if (fabs(x3)<0.0000000001) //???????
x3 = 0;
cout << fixed << setprecision(5) << "x1=" << x3 << "+" << x1 << "i" << ";"
<< "x2=" << x3 << x2 << "i" << endl;
}
}
return 0;
}
|
27
|
13161
|
int main(){
int n;
cin >> n;
double a,b,c,delta;
for (int i=1; i<=n ;++i){
cin >> a >> b >> c;
delta = b*b - 4*a*c;
if (delta == 0){
cout << "x1=x2=";
printf("%.5f", (-b)/(2*a));
}
if (delta > 0 ){
cout << "x1=";
printf("%.5f", (-b + sqrt(b*b-4*a*c))/(2*a));
cout << ";x2=";
printf("%.5f", (-b - sqrt(b*b-4*a*c))/(2*a));
}
if (delta < 0){
delta = -delta;
double shi,xu;
shi = (-b)/(2*a); xu = (sqrt(delta))/(2*a);
if (shi == 0) shi=0;
cout << "x1=";
printf("%.5f", shi);
cout << "+";
printf("%.5f", xu);
cout << "i;";
cout << "x2=";
printf("%.5f", shi);
cout << "-";
printf("%.5f", xu);
cout << "i" ;
}
cout << endl;
}
return 0;
}
|
27
|
13162
|
void main ()
{
int n, i;
double a, b, c, d, e;
scanf("%d", &n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf", &a, &b, &c);
if((b*b-4*a*c)<0)
{d=(-(b/(2*a)));
e=(sqrt(-b*b+4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", d, e, d, e);}
else if((b*b-4*a*c)>=0)
{d=(-b+sqrt(b*b-4*a*c))/(2*a);
e=(-b-sqrt(b*b-4*a*c))/(2*a);
if(d==e)
printf("x1=x2=%.5f\n", d);
else if(!(d==e))
printf("x1=%.5f;x2=%.5f\n", d, e);}
}
}
|
27
|
13163
|
void main()
{
double a,b,c,s;
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0)
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(s==0)
{
printf("x1=x2=%.5f\n",-b/(2*a));
}
else if(s<0)
{if(-b/(2*a)!=0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),b/(2*a),sqrt(-(b*b-4*a*c))/(2*a));}
}
}
|
27
|
13164
|
int main()
{
int n;
cin >> n;
double x1, x2, a, b, c, d;
for (int i = 0; i < n; i++)
{
cin >> a >> b >> c;
d = b * b - 4 * a * c;
if(d == 0)
{
x1 = (-b + sqrt(d)) / (2 * a);
if(x1 != 0.00000)
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
else
cout << fixed << setprecision(5) << "x1=x2=" << "0.00000" << endl;
}
if(d > 0)
{
x1 = (-b + sqrt(d)) / (2 * a);
x2 = (-b - sqrt(d)) / (2 * a);
if (x1 != 0.00000 && x2 != 0.00000)
cout << fixed << setprecision(5) << "x1=" << x1 << ';' << "x2=" << x2 << endl;
if (x1 != 0.00000 && x2 == 0.00000)
cout << fixed << setprecision(5) << "x1=" << x1 << ';' << "x2=" << "0.00000" << endl;
if (x1 == 0.00000 && x2 != 0.00000)
cout << fixed << setprecision(5) << "x1=" << "0.00000" << ';' << "x2=" << x2 << endl;
}
if(d < 0)
{
if ((-b) / (2 * a) != 0.00000)
cout << fixed << setprecision(5)
<< "x1=" << (-b) / (2 * a) << '+' << sqrt(fabs(d)) / (2 * a) << "i;"
<< "x2=" << (-b) / (2 * a) << '-' << sqrt(fabs(d)) / (2 * a) << "i" << endl;
else
cout << fixed << setprecision(5)
<< "x1=" << "0.00000" << '+' << sqrt(fabs(d)) / (2 * a) << "i;"
<< "x2=" << "0.00000" << '-' << sqrt(fabs(d)) / (2 * a) << "i" << endl;
}
}
return 0;
}
|
27
|
13165
|
int main()
{
int n,i;
double a[100],b[100],c[100],x1,x2,p,q;
scanf("%d",&n);
for(i=0;i<=n-1;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<=n-1;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);
}
if(b[i]*b[i]-4*a[i]*c[i]==0)
{
x1=(-b[i])/(2*a[i]) ;
printf("x1=x2=%.5lf\n",x1);
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
p=(-b[i])/(2*a[i]) ;
q=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
if(p==0)
{
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",q,q);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
}
return 0;
}
|
27
|
13166
|
int main()
{
int n,i;
scanf("%d",&n);
float a[100],b[100],c[100];
double x1,x2,m,p,q;
for(i=0;i<n;i++){
scanf("%f%f%f",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++){
m = b[i]*b[i]-4*a[i]*c[i];
if (m > 0){
x1=(-b[i]+sqrt(m))/(2*a[i]);
x2=(-b[i]-sqrt(m))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (m == 0){
x1=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
else if (m < 0){
p=-b[i]/(2*a[i]);
q=sqrt(-m)/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13167
|
int main()
{
int n,i;
float a,b,c;
double x1,x2,m;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
m=-b/(2*a);
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)
{
if (m!=0)
{
cout<<fixed<<setprecision(5)<<"x1="
<<-b/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i;";
cout<<fixed<<setprecision(5)<<"x2="
<<-b/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="
<<"0.00000+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i;";
cout<<fixed<<setprecision(5)<<"x2="
<<"0.00000-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
}
else
{
x1 = x2 = -b/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
}
return 0;
}
|
27
|
13168
|
void main()
{
int n,i;
double p,q,re,im,x1,x2,a,b,c;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=2*a;q=sqrt(b*b-4*a*c);
if(fabs(q)<=1e-6)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else if(q>1e-6)
{
x1=(-b+q)/p;x2=(-b-q)/p;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
re=-b/p;im=sqrt(-b*b+4*a*c)/p;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",re,im,re,im);
}
}
}
|
27
|
13169
|
int main()
{
double a,b,c,x1,x2,n,m;
scanf("%lf",&n);
for(m=1;m<=n;m++)
{
scanf("%lf %lf %lf",&a,&b,&c);
x1=(-b + sqrt(b*b-4*a*c))/(2*a),x2=(-b - sqrt(b*b-4*a*c))/(2*a);
if(b*b-4*a*c>0)
{
printf("x1=%.5lf;x2=%.5lf\n",((0-b) + sqrt(b*b-4*a*c))/(2*a),((0-b) - sqrt(b*b-4*a*c))/(2*a) ) ;
}
else if(b*b-4*a*c==0)
{
printf("x1=x2=%.5lf\n",x1);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.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));
}
}
}
|
27
|
13170
|
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;
}
if (x1 != x2)
{
cout<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
}
if (b * b - 4 * a * c < 0)
{
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
|
13171
|
main()
{
int n,k;
double a[100],b[100],c[100],x1,x2,p,m,q;
scanf("%d\n",&n);
for(k=1;k<=n;k++)
{
scanf("%lf %lf %lf",&a[k],&b[k],&c[k]);
}
for(k=1;k<=n;k++)
{
p=b[k]*b[k]-4*a[k]*c[k];
if(p==0)
{
if(b[k]==0)
{
m=0;
printf("x1=x2=%.5f\n",m);
}
else
{
m=-b[k]/(2*a[k]);
printf("x1=x2=%.5f\n",m);
}
}
if(p>0)
{
x1=(-b[k]+sqrt(p))/(2*a[k]);
x2=(-b[k]-sqrt(p))/(2*a[k]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(p<0)
{
if(b[k]==0)
{
x1=sqrt(-p)/(2*a[k]);
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",x1,x1);
}
else
{
m=-b[k]/(2*a[k]);
q=sqrt(-p)/(2*a[k]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",m,q,m,q);
}
}
}
}
|
27
|
13172
|
/*
* practice.cpp
*
* Created on: 2014-5-23
* Author: de
*/
int main(){
double a,b,c,x1,x2,i;
int cases;
cin>>cases;
for(int j=0;j<cases;j++){
cin>>a>>b>>c;
if(b*b-4*a*c>0){
if(b==0){
x1 = (sqrt(0-4*a*c))/(2*a);
x2 = (0 - sqrt(0-4*a*c))/(2*a);
}
else
{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;
}
if(b*b-4*a*c==0){
if(b==0)x1=0.0;
else x1 = (-b/(2*a));
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
if(b*b-4*a*c<0){
if(b==0){
x1=0.0;
i=sqrt(4*a*c)/(2*a);
}
else
{x1 = (-b/(2*a));
i=sqrt(4*a*c-b*b)/(2*a);}
cout<<fixed<<setprecision(5)<<"x1="<<x1<<"+"<<i<<"i;x2="<<x1<<"-"<<i<<"i"<<endl;
}
}
return 0;
}
|
27
|
13173
|
int main()
{
int n;
cin>>n;
double a,b,c,delta,x1,x2,r,i;
for(int p=1;p<=n;p++)
{
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=";
printf("%.5f", x1);
cout<<";x2=";
printf("%.5f\n",x2);
cout<<endl;
}
else
{
if (delta==0)
{
x1=(-b)/(2*a);
cout<<"x1=x2=";
printf("%.5f", x1);
cout<<endl;
}
else
{
r=(-b)/(2*a);
delta=-delta;
i=(sqrt(delta))/(2*a);
if (r==0)
{
r=abs(r);
}
cout<<"x1=";
printf("%.5f",r);
cout<<"+";
printf("%.5f",i);
cout<<"i;x2=";
printf("%.5f",r);
cout<<"-";
printf("%.5f",i);
cout<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13174
|
int main()
{
int n,k;
cin>>n;
for(k=1;k<=n;k++)
{
float a,b,c;
double x1,x2;
cin>>a>>b>>c;
cout<<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 (fabs(x1) < 1e-5)
{
x1 = 0;
}
else if (fabs(x2) < 1e-5)
{
x2 = 0;
}
cout<<"x1="<<setprecision(5)<<x1<<";"<<"x2="<<setprecision(5)<<x2<<endl;
}
else if((b*b-4*a*c)==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a) ;
if (fabs(x1) < 1e-5)
{
x1 = 0;
}
cout<<"x1=x2="<<setprecision(5)<<x1<<endl;
}
else
{
double a1,b1;
a1=(-b/(2*a));
b1=(sqrt(4*a*c-b*b)/2/a);
if(fabs( a1)<=1e-5)
{
a1=0;
}
else if(fabs(b1) < 1e-5)
{
b1=0;
}
cout<<"x1="<<setprecision(5)<<a1<<"+"<<b1<<"i"<<";"<<"x2="<<setprecision(5)<<a1<<"-"<<b1<<"i"<<endl;
}
}
return 0;
}
|
27
|
13175
|
main()
{
int j,n;
scanf("%d",&n);
for(j=0;j<n;j++)
{
float a,b,c,x1,x2;
scanf("%f %f %f",&a,&b,&c);
if ((b*b-4*a*c)>0)
printf("x1=%.5f;x2=%.5f\n",(double)(-b+sqrt(b*b-4*a*c))/(2*a),(double)(-b-sqrt(b*b-4*a*c))/(2*a));
if ((b*b-4*a*c)==0 )
printf("x1=x2=%.5f\n",-b/(2*a));
if ((b*b-4*a*c)<0){
if(b/(2*a)==0){
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),b/(2*a),sqrt(-(b*b-4*a*c))/(2*a));
}
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a),-b/(2*a),sqrt(-(b*b-4*a*c))/(2*a));
}
}
}
|
27
|
13176
|
int main()
{
int n,j;
double a,b,c;
double x1,x2;
double sb,xb;
scanf("%d",&n);
for (j=0;j<n;j++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if ((b*b-4.0*a*c)>0)
{
x1=(-b+sqrt(b*b-4.0*a*c))/(2.0*a);
x2=(-b-sqrt(b*b-4.0*a*c))/(2.0*a);
printf("x1=%.5lf;x2=%.5lf\n",x1+1e-6,x2+1e-6);
}
else if (fabs(b*b-4.0*a*c)<1e-8)
{
x1=-b/(2.0*a);
printf("x1=x2=%.5lf\n",x1+1e-6);
}
else
{
sb=-b/(2.0*a);
xb=sqrt(4.0*a*c-b*b)/(2.0*a);
if (fabs(sb)<1e-8) sb=0;
if (fabs(xb)<1e-8) xb=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",sb,xb,sb,xb);
}
}
return(0);
}
|
27
|
13177
|
int main()
{
int n,m;
float a,b,c;
double x1,x2;
cin>>n;
for(m=1;m<=n;m=m+1)
{
cin>>a>>b>>c;
x1=(-b+sqrt(b*b-4*a*c))/(2*a),x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if(b*b-4*a*c>0)
{
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else if(b*b-4*a*c<=0)
{
if(b*b-4*a*c==0)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)+1-1<<"+"<<sqrt(4*a*c-b*b)/(2*a)<<"i"<<";"<<"x2="<<-b/(2*a)+1-1<<"-"<<sqrt(4*a*c-b*b)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13178
|
int main()
{
int n,i;
double a,b,c,x1,x2,d,e;
scanf("%d",&n);
for (i=0;i<n;i++){
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
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/2/a;
if(x1==-0) x1 = 0;
printf("x1=x2=%.5lf\n",x1);
}
else if(d<0){
x1=-b/2/a;
if(x1==-0) x1 = 0;
e=sqrt(-d)/2/a;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,e,x1,e);
}
}
return 0;
}
|
27
|
13179
|
int main()
{
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=%.5lf\n",m);
}
else if(delta>0)
{
x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(delta<0&&b[i]==0)
{
m=-0.00000;
printf("x1=%.5lf+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
else
{
printf("x1=%.5lf+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
}
}
return 0;
}
|
27
|
13180
|
void main()
{
int n;
double a,b,c,x1,x2,a1,b1;
scanf("%d\n", &n);
while(n!=0)
{
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);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else if((b*b-4*a*c)<0)
{
a1=-b/(2*a);
b1=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", a1,b1,a1,b1);
}
n=n-1;
}
}
|
27
|
13181
|
void main ()
{
int n,i;
double a,b,c,x1,x2,p=0.000001;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if (b*b-4*a*c<-p)
{
x1=-b/(2*a);x2=sqrt(-b*b+4*a*c)/(2*a);
if (x1>-p&&x1<p) x1=0;
if (x2>-p&&x2<p) x2=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
else
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if (x1>-p&&x1<p) x1=0;
if (x2>-p&&x2<p) x2=0;
if (b*b-4*a*c<p&&b*b-4*a*c>-p)
printf("x1=x2=%.5f\n",x1);
else
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
}
}
|
27
|
13182
|
main()
{
int i, n;
float a,b,c;
scanf("%d",&n);
double d[n][3],x,y;
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a,&b,&c);
x=b*b-4*a*c;
if(x==0)
{
d[i][1]=d[i][2]=-b/(2*a);
d[i][3]=x;
}
else if(x>0)
{
y=sqrt(x);
d[i][1]=(-b+y)/(2*a);
d[i][2]=(-b-y)/(2*a);
d[i][3]=x;
}
else
{
y=sqrt(-x);
d[i][1]=-b/(2*a);
d[i][2]=y/(2*a);
d[i][3]=x;
}
}
for(i=0;i<n;i++)
{
if(d[i][1]==-0)
d[i][1]=0;
if(d[i][2]==-0)
d[i][2]=0;
if(d[i][3]<0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d[i][1],d[i][2],d[i][1],d[i][2]);
else if(d[i][3]>0)
printf("x1=%.5f;x2=%.5f\n",d[i][1],d[i][2]);
else
printf("x1=x2=%.5f\n",d[i][1]);
}
}
|
27
|
13183
|
/*
* ????????.cpp
*
* Created on: 2012-10-14
* Author: Administrator
*/
int main()
{
int n,i;
float a[100],b[100],c[100];
double x1,x2,delta,x;
cin >> n;
for (i=1;i<=n;i++)
{
cin >> a[i] >> b[i] >> c[i];
}
for (i=1;i<=n;i++)
{
cout << fixed << setprecision(5);
{
delta=b[i]*b[i]-4*a[i]*c[i];
x1=(-b[i] + sqrt(delta))/(2*a[i]);
x2=(-b[i] - sqrt(delta))/(2*a[i]);
if (delta==0)
{
cout << "x1=x2=" << x1 << endl;
}
if (delta>0)
{
cout << "x1=" << x1 << ";" << "x2=" << x2 <<endl;
}
if (delta<0)
{
x=(sqrt(-delta))/(2*a[i]);
cout << "x1=" << (-b[i]/(2*a[i])==0?b[i]/(2*a[i]):-b[i]/(2*a[i])) <<"+" << x << "i" <<";" << "x2=" << (-b[i]/(2*a[i])==0?b[i]/(2*a[i]):-b[i]/(2*a[i])) <<"-" << x << "i" <<endl;
}
}
}
return 0;
}
|
27
|
13184
|
/*
* g9.cpp
*?????????
* Created on: 2012-10-10
* Author: ???
*/
int main()
{
double a,b,c;
int n;//????
cin>>n;
for(int i=1;i<=n;i++)//????
{
cin>>a>>b>>c;//??
double d=b*b-4*a*c;//??????
if(d>0)//??if??
{double x1,x2 ;
x1=(-b + sqrt(d))/(2*a);
x2 = (-b - sqrt(d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;}//??????0?
if(d==0)
{double x1,x2;
x1=-b/(2*a);
x2=x1;
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;}//????=0?
if(d<0)
{
d=-d;
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<<"+"<<sqrt(d)/(2*a)<<"i"<<";"<<"x2="<<b<<"-"<<sqrt(d)/(2*a)<<"i"<<endl;
}
}//??????0?
return 0;
}
|
27
|
13185
|
//****************************************
//*?????(8.3) ????????? (1051)
//*????? 1100012996 **
//*???2011.9.14
//****************************************
int main()
{
int n;//n????
cin>>n;
double a,b,c;//a?b?c???
for (int i=0;i<n;i++)
{
double x1,x2;
cin>>a>>b>>c;
double dot = b*b - 4*a*c;//???b^2-4ac??
//?????????????????
if (dot==0)
{
x1 = x2 = - b / ( 2 * a );
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
if (dot>0)
{
x1 = (-b + sqrt(dot))/(2*a) ;
x2 = (-b - sqrt(dot))/(2*a) ;
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else
{
if (-b/(2*a)!=0)
//????????-0.00000?????
{
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)<<"+"<<sqrt(-dot)/(2*a)
<<"i;x2="<<-b/(2*a)<<"-"<<sqrt(-dot)/(2*a)<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<b/(2*a)<<"+"<<sqrt(-dot)/(2*a)
<<"i;x2="<<b/(2*a)<<"-"<<sqrt(-dot)/(2*a)<<"i"<<endl;
}
}
}
}
return 0;
}
|
27
|
13186
|
int main()
{
int n=0;
int i=0;
double a=0;
double b=0;
double c=0;
double pan=0;
double x1=0;
double x2=0;
double y=0;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
pan=b*b-4*a*c;
if(pan>0)
{
x1=(-b + sqrt(pan))/(2*a);
x2=(-b - sqrt(pan))/(2*a);
printf("x1=%.5f",x1 );
printf(";x2=%.5f\n", x2);
}
else if(pan==0)
{
x1=(-b)/(2*a);
x2=x1;
printf("x1=x2=%.5f\n",x1 );
}
else
{
x1=(-b)/(2*a);
if(x1==0)
{
x1=-x1;
}
y=sqrt(-pan);
printf("x1=%.5f",x1 );
printf("+%.5f",y /(2*a));
printf("i;");
printf("x2=%.5f",x1 );
printf("%.5f",-(y/(2*a)));
printf("i\n" );
}
}
return 0;
}
|
27
|
13187
|
//*4.cpp???e?? **
//*????? 1300012896 **
//*???2013.10.9 *
//********************************
int main()
{
int n, k;
double a, b, c, x1, x2, D, d, e;
cin >> n ;
for (k = 1; k <= n; k++)
{cin >> a >> b >> c;
D = b * b - 4 * a * c;
if (b != 0)
b = -b;
if (D > 0)
{x1 = (double)(b + sqrt(D))/(2 * a);
x2 = (double)(b - sqrt(D))/(2 * a);
cout << fixed;
cout << "x1=" << setprecision(5) << x1 << ";" << "x2=" << x2 << endl;}
else if (D < 0)
{d = (double)(b) / (2 * a);
e = (double)sqrt (-D) / (2 * a);
cout << "x1=" << setprecision(5) << d << "+" << e << "i"<< ";" <<"x2=" << d << "-" << e << "i"<< endl;}
else
{x1 = (double)(b + sqrt(D))/(2 * a);
cout << fixed;
cout << "x1=x2=" << setprecision(5) << x1 << endl;}
}
return 0;
}
|
27
|
13188
|
main()
{
float x[100][3],a,b,c,d;
int i,n;
double x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%f%f%f",&x[i][1],&x[i][2],&x[i][3]);
}
for(i=1;i<=n;i++)
{
a=x[i][1];
b=x[i][2];
c=x[i][3];
d=b*b-4*a*c;
if(d>0 && c==0)
printf("x1=%.5f;x2=%.5f\n",c,(-b-sqrt(d))/(2*a));
if(d>0 && c!=0)
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt(d))/(2*a),(-b-sqrt(d))/(2*a));
if(d==0)
printf("x1=x2=%.5f\n",(-b+sqrt(d))/(2*a));
if(d<0 && b==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,sqrt(-d)/(2*a),b,sqrt(-d)/(2*a));
if(d<0 && b!=0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(a*2),sqrt(-d)/(2*a),-b/(2*a),sqrt(-d)/(2*a));
}
}
|
27
|
13189
|
int main()
{
int n,k,j;
double a[100],b[100],c[100],p=0.00,q=0.00,m=0.00;
scanf("%d",&n);
for(k=0;k<n;k++)
{scanf("%lf%lf%lf/n",&a[k],&b[k],&c[k]);}
for(j=0;j<n;j++)
{
m=b[j]*b[j]-4*a[j]*c[j];
p=-b[j]/(2*a[j]);
if(p==-0)
p=0.00000;
if(m<0){
q=sqrt(-m)/(2*a[j]);
printf("x1=%.5lf+%.5lfi;x2=%.5f-%.5fi\n",p,q,p,q);}
if(m==0){
printf("x1=x2=%.5f\n",p);}
if(m>0){
q=sqrt(m)/(2*a[j]);
printf("x1=%.5f;x2=%.5f\n",p+q,p-q);}
}
return 0;
}
|
27
|
13190
|
void main()
{
void d(double a,double b,double c);
int n,i;
double a,b,c;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d(a,b,c);
}
}
void d(double a,double b,double c)
{
double x1,x2;
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=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;",x1,x2);
printf("x2=%.5lf-%.5lfi\n",x1,x2);
}
}
|
27
|
13191
|
int main(int argc, char* argv[])
{
int j,n;
float a[1000],b[1000],c[1000];
scanf("%d",&n);
for(j=1;j<=n;j++)
{
scanf("%f %f %f",&a[j],&b[j],&c[j]);
}
for(j=1;j<=n;j++)
{
if(b[j]*b[j]-4*a[j]*c[j]>0)
{
printf("x1=%.5f;x2=%.5f\n",(float)(-b[j]+sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]),(float)(-b[j]-sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]));
}
if(b[j]*b[j]-4*a[j]*c[j]==0)
{
printf("x1=x2=%.5f\n",(float)(-b[j]/(2*a[j])));
}
if(b[j]*b[j]-4*a[j]*c[j]<0)
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(float)(-b[j]/(2*a[j])),(float)(sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j])),(float)(-b[j]/(2*a[j])),(float)(sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j])));
}
}
return 0;
}
|
27
|
13192
|
int main()
{
int n,o,g;
double a,b,c,d,x1,x2;
cin>>n;
for(o=1;o<=n;o++)
{
cin>>a>>b>>c;
if(a<0)
{
a=0-a;
b=0-b;
c=0-c;
}
d=b*b-4*a*c;
if(d>0)
g=2;
else if(d<0)
{
g=0;
d=0-d;
}
else
g=1;
if(g==1)
{
x1=-b/(2*a);
cout<<"x1=x2=";
printf("%.5f",x1);
cout<<endl;
}
else if(g==2)
{
x1=(sqrt(d)-b)/(2*a);
x2=(-sqrt(d)-b)/(2*a);
cout<<"x1=";
printf("%.5f",x1);
cout<<";x2=";
printf("%.5f",x2);
cout<<endl;
}
else
{
x1=sqrt(d)/(2*a);
cout<<"x1=";
printf("%.5f",-b/(2*a));
cout<<"+";
printf("%.5f",x1);
cout<<"i;x2=";
printf("%.5f",-b/(2*a));
cout<<"-";
printf("%.5f",x1);
cout<<"i"<<endl;
}
}
return 0;
}
|
27
|
13193
|
int main()
{
int i,j,k,n;
double x1[100],x2[100];
double a[100],b[100],c[100],d[100];
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf\n",&a[i],&b[i],&c[i]);
d[i]=b[i]*b[i]-4*a[i]*c[i];
}
for(i=1;i<=n;i++)
{
if(d[i]>0)
{
x1[i]=(-b[i]+sqrt(d[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(d[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
if(d[i]==0)
{
x1[i]=x2[i]=(-b[i]+sqrt(d[i]))/(2*a[i]);
printf("x1=x2=%.5lf\n",x1[i]);
}
if(d[i]<0)
{
if(b[i]==0)
{
x1[i]=b[i]/(2*a[i]);
x2[i]=sqrt(-d[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1[i],x2[i],x1[i],x2[i]);
}
else
{
x1[i]=-(b[i]/(2*a[i]));
x2[i]=sqrt(-d[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1[i],x2[i],x1[i],x2[i]);
}
}
}
return 0;
}
|
27
|
13194
|
int main()
{
int n;
scanf("%d", &n);
int i;
double a, b, c, delta;
double x1, x2;
double shi1, xu1, shi2, xu2;
for(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);
if(x1!=x2)
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
if(x1==x2)
printf("x1=x2=%.5lf\n", x2);
}
if(delta<0)
{
shi1=shi2=-b/(2*a);
xu1=sqrt(-delta)/(2*a);
xu2=-sqrt(-delta)/(2*a);
printf("x1=%.5lf", shi1);
if(xu1>0)
printf("+%.5lfi", xu1);
if(xu1<0)
printf("%.5lfi", xu1);
printf(";x2=%.5lf", shi2);
if(xu2>0)
printf("+%.5lfi", xu2);
if(xu2<0)
printf("%.5lfi\n", xu2);
}
}
return 0;
}
|
27
|
13195
|
/*
*???????(8.3) ????????? (1051)
*??????
*???2012?10?15? 18:15:34
*?????????? ax2 + bx + c = 0 ?????a???0?
*/
int main(){
float a=0.0,b=0.0,c=0.0;
double x1=0.0,x2=0.0,x3=0.0,x4=0.0,D=0.0;
int n=0;
cin>>n;
while(n--){
cin>>a>>b>>c;
D=b*b-4*a*c;
if(D>=0){
x1=(-b+sqrt(D))/(2*a) ;
x2 =(-b-sqrt(D))/(2*a);
}
else{
x3=(-b)/(2*a);
x4=sqrt(-D)/(2*a);
}
if(x1==0){
x1=0.0;
}
if(x2==0){
x2-0.0;
}
if(x3==0){
x3=0.0;
}
if(D>0){
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else if(D==0){
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else{
cout<<fixed<<setprecision(5)<<"x1="<<x3<<"+"<<x4<<"i;x2="<<x3<<"-"<<x4<<"i"<<endl;
}
}
return 0;
}
|
27
|
13196
|
int qj( double a,double b,double c)
{
double x1,x2,e,f,g;
double d;
d=b*b-4*a*c;
if (d>0)
{
e=(-b + sqrt(d))/(2*a);
f=(-b -sqrt(d))/(2*a);
if(e==0)
e=0;
printf("x1=%.5f;x2=%.5f\n",e,f);
}
else if (d==0)
{
e=(-b)/(2*a);
if(e==0)
e=0;
printf("x1=x2=%.5f\n",e);
}
else
{
e=(-b)/(2*a);
f=sqrt(-d)/(2*a);
if(e==0)
e=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
main()
{
double a,b,c;
int n;
int i;
i=0;
scanf("%d\n",&n);
while(i<n)
{
scanf("%lf%lf%lf",&a,&b,&c);
qj(a,b,c);
i++;
}
}
|
27
|
13197
|
int main()
{
int n,i;
double a,b,c;
scanf("%d\n",&n);
for(i=0;i<n;i++){
scanf("%lf %lf %lf",&a, &b, &c);
if(b*b-4*a*c!=0){
if(a>0){
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=%.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<0){
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=%.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{
printf("x1=x2=%.5lf\n",-b/(2*a));
}
}
return 0;
}
|
27
|
13198
|
/*
* ?????????????.cpp
* ?????1200012840
* ?????2012-10-19
* ???????
x1 = (-b + sqrt(b*b-4*a*c))/(2*a)
x2 = (-b - sqrt(b*b-4*a*c))/(2*a)
??????? ax2 + bx + c = 0 ?????a???0?
*/
int main()
{
int i,n;//????
double a,b,c,x1,x2;//????
cin>>n;//??????
for(i=1;i<=n;i++)//??for??
{
cin>>a>>b>>c;//??????
if(b*b-4*a*c>0)//??delta?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);//?????x1,x2??
}
if(b*b-4*a*c==0)//??delta?0???
{
if(b!=0)//??b??
x1=-b/(2*a);
else x1=0;
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);//?????x1,x2??
}
if(b*b-4*a*c<0)//??delta?0???
{
if(b!=0)//??b??
x1=-b/(2*a);
else x1=0;
x2=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);//?????x1,x2??
}
}
return 0;//????
}
|
27
|
13199
|
int main()
{
int i,n;
double a,b,c,x1,x2,dert,d,e;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
dert=b*b-4*a*c;
if(dert>0)
{
x1=(-b+sqrt(dert))/(2*a);
x2=(-b-sqrt(dert))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(dert==0)
{
x1=(-b+sqrt(dert))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if(dert<0)
{
dert=-dert;
d=(-b)/(2*a);
d=(d==-0)?(0):(d);
e=sqrt(dert)/(2*a);
e=(e>=0)?(e):(-e);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d,e,d,e); }
}
return 0;
}
|
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