f___2.h

来自「c源码」· C头文件 代码 · 共 20 行

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/*         .h                     freeware                   xhunga@tiscali.fr*/

/* -------------------------------------------------------------------------- */
double f(
double x)
{
 return(       cos(x));
}
char  feq[] = " cos(x)";
/* -------------------------------------------------------------------------- */
double Df(
double x)
{
 return(  (-sin(x)) );
}
char Dfeq[] = " (-sin(x)) ";
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

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