Mathc initiation/006a

Sommaire

Installer et compiler ces fichiers dans votre répertoire de travail.

	c00b.c

/* ---------------------------------- */
/* save as c00b.c                     */
/* ---------------------------------- */
#include "x_afile.h"
#include      "fb.h"
/* ---------------------------------- */
int main(void)
{
pt2d p = {1, 2};
v3d  V = R_s_x_R_t(Rx,Ry,Rz, p);

 clrscrn();

 printf(" R : (s,t)-> %si %sj %sk\n\n", Rxeq,Ryeq,Rzeq);
 
 printf("   with R  =   Rx i +  Ry j + Rz k \n\n" 
 
        "             |    i       j      k |  \n"
        "             | Rx_s    Ry_s   Rz_s |  \n"
        "             | Rx_t    Ry_t   Rz_t |\n\n"
        
        " R_s x R_t =   (Ry_s * Rz_t - Ry_t * Rz_s) i   \n"
        "             - (Rx_s * Rz_t - Rx_t * Rz_s) j   \n"
        "             + (Rx_s * Ry_t - Rx_t * Ry_s) k \n\n"

        " R_s x R_t = (%.3f,%.3f,%.3f)\n\n"
        
        " Compute the Norm of R_s x R_t:\n\n"        
        " ||R_s x R_t|| = %.3f \n\n"               
        , V.i,V.j,V.k,
         NR_s_x_R_t(Rx,Ry,Rz, p));
 
 stop();
 
 return 0;
}
/* ---------------------------------- */
/* ---------------------------------- */

Exemple de sortie écran :

 R : (s,t)-> +(sin(s)*cos(t))i +(sin(s)*sin(t))j +(cos(s))k

   with R  =   Rx i +  Ry j + Rz k 

             |    i       j      k |  
             | Rx_s    Ry_s   Rz_s |  
             | Rx_t    Ry_t   Rz_t |

 R_s x R_t =   (Ry_s * Rz_t - Ry_t * Rz_s) i   
             - (Rx_s * Rz_t - Rx_t * Rz_s) j   
             + (Rx_s * Ry_t - Rx_t * Ry_s) k 

 R_s x R_t = (-0.295,0.644,0.455)

 Compute the Norm of R_s x R_t:

 ||R_s x R_t|| = 0.841 

 Press return to continue.