Mathc initiation/Fichiers h : c25ba
Installer ce fichier dans votre répertoire de travail.
/* --------------------------------- */
/* save as fa.h */
/* --------------------------------- */
double f(
double x,
double y)
{
return( (y*y * sin(x*y)) );
}
char feq[] = "y**2 * sin(x*y)";
/* --------------------------------- */
double f_x(
double x,
double y)
{
return( (y*y*y * cos(x*y)) );
}
char Dfeq_x[] = "y**3 * cos(x*y)";
/* --------------------------------- */
double f_y(
double x,
double y)
{
return( (x* y*y * cos(x*y) + 2*y * sin(x*y)) );
}
char Dfeq_y[] = "x*y**2 * cos(x*y) + 2*y * sin(x*y)";
/* --------------------------------- */
double f_xx(
double x,
double y)
{
return( ( -y*y*y*y * sin(x*y) ) );
}
char Dfeq_xx[] = "-y**4 * sin(x*y)";
/* --------------------------------- */
double f_yy(
double x,
double y)
{
return( (4*cos(x*y)*x*y + 2*sin(x*y) - y*y*sin(x*y)*x*x) );
}
char Dfeq_yy[] = "4*cos(x*y)*x*y + 2*sin(x*y) - y**2*sin(x*y)*x**2";
/* --------------------------------- */
|
/* --------------------------------- */
/* save as fb.h */
/* --------------------------------- */
double f(
double x,
double y)
{
return( (x*x*x * y*y - 2*x*x * y + 3*x) );
}
char feq[] = "x**3 * y**2 - 2*x**2 * y + 3*x";
/* --------------------------------- */
double f_x(
double x,
double y)
{
return( (3*x*x * y*y - 4*x * y + 3) );
}
char Dfeq_x[] = "3*x**2 * y**2 - 4*x * y + 3";
/* --------------------------------- */
double f_y(
double x,
double y)
{
return( (2*x*x*x * y - 2*x*x) );
}
char Dfeq_y[] = "2*x**3 * y - 2*x**2";
/* --------------------------------- */
double f_xx(
double x,
double y)
{
return( (6*x * y*y - 4*y) );
}
char Dfeq_xx[] = "6*x * y**2 - 4*y";
/* --------------------------------- */
double f_yy(
double x,
double y)
{
return( (2*x*x*x) );
}
char Dfeq_yy[] = "2*x**3";
/* --------------------------------- */
| ||||
/* --------------------------------- */
/* save as fc.h */
/* --------------------------------- */
double f(
double x,
double y)
{
return( exp(2*x+3*y) );
}
char feq[] = "exp(2*x+3*y)";
/* --------------------------------- */
double f_x(
double x,
double y)
{
return( (2*exp(2*x+3*y)) );
}
char Dfeq_x[] = "2*exp(2*x+3*y)";
/* --------------------------------- */
double f_y(
double x,
double y)
{
return( (3*exp(2*x+3*y)) );
}
char Dfeq_y[] = "3*exp(2*x+3*y)";
/* --------------------------------- */
double f_xx(
double x,
double y)
{
return( (4*exp(2*x+3*y)) );
}
char Dfeq_xx[] = "4*exp(2*x+3*y)";
/* --------------------------------- */
double f_yy(
double x,
double y)
{
return( (9*exp(2*x+3*y)) );
}
char Dfeq_yy[] = "9*exp(2*x+3*y)";
/* --------------------------------- */
|
