Mathc matrices/a82
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c00f.c |
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/* ------------------------------------ */
/* Save as : c00f.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define RCA RC4
/* ------------------------------------ */
void fun(void)
{
double **A = rE_mR(i_mR(RCA,RCA),999,+1.E-3);
double **sinA = i_mR(RCA,RCA);
double **cosA = i_mR(RCA,RCA);
double **sinA2 = i_mR(RCA,RCA);
double **cosA2 = i_mR(RCA,RCA);
clrscrn();
sin_mR(A, sinA);
cos_mR(A, cosA);
printf(" sinA :");
p_mR(sinA,S8,P4,C6);
printf(" cosA :");
p_mR(cosA,S8,P4,C6);
stop();
clrscrn();
pow_mR(2, sinA, sinA2);
pow_mR(2, cosA, cosA2);
printf(" sinA2 :");
p_mR(sinA2,S8,P4,C6);
printf(" cosA2 :");
p_mR(cosA2,S8,P4,C6);
add_mR(cosA2,sinA2,A);
printf(" I = cosA**2 + sinA**2 ");
p_mR(A,S8,P4,C6);
f_mR(A);
f_mR(sinA);
f_mR(cosA);
f_mR(sinA2);
f_mR(cosA2);
}
/* ------------------------------------ */
int main(void)
{
time_t t;
srand(time(&t));
do
{
fun();
} while(stop_w());
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
SinA = + A - (1/3!) A**3 + (1/5!) A**5 - (1/7!) A**7 + ...
CosA = + I - (1/2!) A**2 + (1/4!) A**4 - (1/6!) A**6 + ...
Dans cet exemple je vous propose deux fonctions sin_mR() et cos_mR(), puis on vérifie une propriété de ces fonctions :
I = cosA**2 + sinA**2
Exemple de sortie écran :
------------------------------------
Copy/Past into the octave window.
A=[
+0.6960,-0.8400,+0.8480,+0.8550;
-0.5360,+0.5670,+0.9980,+0.8660;
+0.5170,-0.9590,+0.4840,-0.1850;
+0.1040,+0.2210,+0.4630,-0.0580]
Press return to continue.
------------------------------------
sinA :
-0.3578 +0.3995 -0.8897 -0.9031
+0.6010 -0.7135 -0.9347 -0.9026
-0.3042 +0.7121 -0.6359 +0.1423
-0.0062 -0.3516 -0.4447 +0.0079
cosA :
+0.3822 +0.7146 -0.3288 +0.1491
+0.0742 +0.9449 -0.5176 +0.0809
-0.5025 +0.6955 +1.1452 +0.2335
-0.0574 +0.1626 -0.2688 +0.8936
Press return to continue.
------------------------------------
sinA2 :
+0.6442 -0.7439 +0.9122 -0.1712
-0.3539 +0.4009 +1.1279 -0.0389
+0.7293 -1.1325 -0.0540 -0.4574
-0.0739 -0.0710 +0.6134 +0.2597
cosA2 :
+0.3558 +0.7439 -0.9122 +0.1712
+0.3539 +0.5991 -1.1279 +0.0389
-0.7293 +1.1325 +1.0540 +0.4574
+0.0739 +0.0710 -0.6134 +0.7403
I = cosA**2 + sinA**2
+1.0000 -0.0000 -0.0000 -0.0000
+0.0000 +1.0000 -0.0000 -0.0000
+0.0000 -0.0000 +1.0000 +0.0000
+0.0000 -0.0000 -0.0000 +1.0000
Press return to continue
Press X to stop