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Mathc initiation/a194

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Texte de la légende
fa.h
/* --------------------------------- */
/* save as  fa.h                     */
/* --------------------------------- */
double r(
double t)
{
double a = 1 ;
double b = 1 ;

         return(a+b*cos(t));
}
char  req[] =  "a+b*cos(t)";
/* --------------------------------- */
/* --------------------------------- */
fb.h
/* --------------------------------- */
/* save as  fb.h                     */
/* --------------------------------- */
double r(
double t)
{
double a = 1;
       
        return( a*cos(3*t));
}
char  req[] =  "a*cos(3*t)";
/* --------------------------------- */
/* --------------------------------- */
fc.h
/* --------------------------------- */
/* save as  fc.h                     */
/* --------------------------------- */
double r(
double t)
{
double a = 1;
       
        return( a*cos(2*t));
}
char  req[] =  "a*cos(2*t)";
/* --------------------------------- */
/* --------------------------------- */
fd.h
/* --------------------------------- */
/* save as  fd.h                     */
/* --------------------------------- */
double r(
double t)
{
double a = 1;

        return( a*t );
}
char  req[] =  "a*t";
/* --------------------------------- */
/* --------------------------------- */