Mathc matrices/c11b2
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c0b2.c |
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/* ------------------------------------ */
/* Save as : c0b2.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(void)
{
double ab[R2*C2]={
-367,+448,
+448,-847
};
int r = RC2;
double **A = ca_A_mR(ab,i_mR(r,r));
double **EignVector= i_mR(r,r);
double **T_EignVector= i_mR(r,r);
double **EigsValue = i_mR(r,C1);
double **T1= i_mR(r,r);
double **T2= i_mR(r,r);
clrscrn();
printf(" Copy/Past into the octave windows \n\n");
p_octave_mR(A,"a",S1,P0);
printf(" [V, E] = eigs (a,10) \n\n");
stop();
clrscrn();
eignVectoruv_mR(A,EignVector);
printf(" EignVector:");
p_mR(EignVector,S10,P4,C6);
printf(" EigsValue : T_EignVector * A * EignVector");
transpose_mR(EignVector,T_EignVector);
mul_mR(T_EignVector,A,T1);
mul_mR(T1,EignVector,T2);
p_mR(T2,S10,P4,C6);
eigsuv_mR(A,EigsValue);
printf(" EigsValue :");
p_mR(EigsValue,S10,P4,C1);
stop();
f_mR(A);
f_mR(EignVector);
f_mR(T_EignVector);
f_mR(EigsValue);
f_mR(T1);
f_mR(T2);
}
/* ------------------------------------ */
int main(void)
{
fun();
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Exemple de sortie écran :
/* ------------------------------------ */
Copy/Past into the octave windows
a=[
-367,+448;
+448,-847]
[V, E] = eigs (a,10)
Press return to continue.
/* ------------------------------------ */
EignVector:
-0.5137 +0.8580
+0.8580 +0.5137
EigsValue : T_EignVector * A * EignVector
-1115.2362 +0.0000
+0.0000 -98.7638
EigsValue :
-1115.2362
-98.7638
Press return to continue.