Mathc initiation/a103

Sommaire

Installer et compiler ces fichiers dans votre répertoire de travail.

	c00a1.c

/* --------------------------------- */
/* save as c00a1.c                   */
/* --------------------------------- */
#include  "x_hfile.h"
#include       "fa.h"
/* --------------------------------- */
int main(void)
{
tvalue     t;
  	
  t.value=-2.; 
  t.min  =-2.; 
  t.max  = 2.; 
  t.step = .1;

tvalue L_tan;

 L_tan.min  = -.6;
 L_tan.max  =  .6;
 L_tan.step =  .1;
 
 clrscrn();

 printf(" r(t) = f(t)i + g(t)j \n\n");
 printf(" With \n\n");
 printf(" f : t-> %s  \n", feq);
 printf(" g : t-> %s\n\n", geq);

 printf(" Animate the tangent and the vector       \n\n"
        " ... load \"a_main.plt\" ... with gnuplot.\n\n");
 
  do{
	  G_Curve_tang_2d( i_ctrl_splot(-10,10,0,10, 0.,0., 0.,0., 0.,0.),
                       f,g,
                       t,
                       L_tan
                      );

      pause(9.E7);
      
  } while((t.value+=t.step)<t.max);

 return 0;
}
/* --------------------------------- */
/* --------------------------------- */

Draw tangent of a vectoriel function

Exemple de sortie écran :

 r(t) = f(t)i + g(t)j 

 With 

 f : t-> 2*t  
 g : t-> 8 - 2*t**2

 Animate the tangent and the vector       

 ... load "a_main.plt" ... with gnuplot.