Mathc initiation/a373

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fa.h
/* --------------------------------- */
/* save as fa.h                      */
/* --------------------------------- */
double f(
double x)
{
        return((  exp(x/4.)-2. ));
}
char  feq[] =    "exp(x/4.)-2.";
/* --------------------------------- */
/* --------------------------------- */
fb.h
/* --------------------------------- */
/* save as fb.h                      */
/* --------------------------------- */
double f(
double x)
{
        return((  cos(x) ));
}
char  feq[] =    "cos(x)";
/* --------------------------------- */
/* --------------------------------- */
fc.h
/* --------------------------------- */
/* save as fc.h                      */
/* --------------------------------- */
double f(
double x)
{
        return((  sqrt(x) ));
}
char  feq[] =    "sqrt(x)";
/* --------------------------------- */
/* --------------------------------- */
fd.h
/* --------------------------------- */
/* save as fd.h                      */
/* --------------------------------- */
double f(
double x)
{
        return((  x-tan(x) ));
}
char  feq[] =    "x-tan(x)";
/* --------------------------------- */
/* --------------------------------- */