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211k
-828 +6 +321 +504
+555 +300 +507 -830
+303 +959 +719 -612
-458 -594 -64 -25
b : ID :
+1 +0 +0 +0
+0 +1 +0 +0
+0 +0 +1 +0
+0 +0 +0 +1
Press return to continue.
------------------------------------
Ab :
-828 +6 +321 +504
+555 +300 +507 -830
+303 +959 +719 -612
-458 -594 -64 -25
+1 +0 +0 +0
+0 +1 +0 +0
+0 +0 +1 +0
+0 +0 +0 +1
gj_TP_mR(Ab) :
+1.0000e+00 +0.0000e+00 +0.0000e+00 +0.0000e+00
+0.0000e+00 +1.0000e+00 +0.0000e+00 +0.0000e+00
+0.0000e+00 +0.0000e+00 +1.0000e+00 +0.0000e+00
+0.0000e+00 +0.0000e+00 +0.0000e+00 +1.0000e+00
+9.6778e-04 +2.4025e-03 -2.3558e-03 -2.5803e-03
-1.1140e-03 -2.3055e-03 +2.1822e-03 +6.6390e-04
+2.6791e-03 +3.5312e-03 -2.4923e-03 -2.2132e-03
+1.8810e-03 +1.7253e-03 -2.3089e-03 -2.8374e-03
Press return to continue.
------------------------------------
Copy/Past into the octave window.
A=[
-828,+6,+321,+504;
+555,+300,+507,-830;
+303,+959,+719,-612;
-458,-594,-64,-25]
format short e
inv(A)
invA : c_Inv_A_mR(Ab,invA);
+9.6778e-04 +2.4025e-03 -2.3558e-03 -2.5803e-03
-1.1140e-03 -2.3055e-03 +2.1822e-03 +6.6390e-04
+2.6791e-03 +3.5312e-03 -2.4923e-03 -2.2132e-03
+1.8810e-03 +1.7253e-03 -2.3089e-03 -2.8374e-03
Press return to continue
Press X return to stop
Mathc matrices/a110
Application
Installer et compiler ces fichiers dans votre répertoire de travail.
/* Save as : c00.c */
int main(void)
double at[RA*CA]={
+10, -150, -148,
+207, -215, +997,
-858, +803, +289
double bt[RA*Cb]={
+437,
-233,
+444
double **A = ca_A_mR(at,i_mR(RA,CA));
double **B = ca_A_mR(bt,i_mR(RA,Cb));
double **Inv = i_mR(RA,C3);
double **X = i_mR(RA,Cb);
double **T = i_mR(RA,Cb);
clrscrn();
printf(" We want to find X such as, \n\n");
printf(" AX = B \n\n");
printf(" If A is a square matrix and, \n\n");
printf(" If A has an inverse matrix, \n\n");
printf(" you can find X by this method\n\n");
printf(" X = inv(A) B \n\n\n");
printf(" To verify the result you can \n\n");
printf(" multiply the matrix A by X. \n\n");
printf(" You must refind B. \n\n");
stop();
clrscrn();
printf(" A :\n");
p_mR(A,S5,P0,C7);
printf(" B :\n");
p_mR(B,S5,P0,C7);
stop();
clrscrn();
printf(" inv(A) :\n");
pE_mR(invgj_mR(A,Inv),S1,P3,C7);
printf(" X = inv(A) * B :\n");
p_mR(mul_mR(Inv,B,X),S13,P4,C7);
stop();
clrscrn();
printf(" B :\n");
p_mR(B,S5,P0,C7);
printf(" AX :\n");
p_mR(mul_mR(A,X,T),S5,P0,C7);
stop();
f_mR(T);
f_mR(X);
f_mR(B);