?? xdfridr.c
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/* Driver for routine dfridr */#include <stdio.h>#include <math.h>#define NRANSI#include "nr.h"#include "nrutil.h"float func(float x){ return tan(x);}int main(void){ float x,h,dx,err; printf("input x, h\n"); while (scanf("%f %f",&x,&h) != EOF) { dx=dfridr(func,x,h,&err); printf("dfridr=%12.6f %12.6f %12.6f\n",dx,1.0/SQR(cos(x)),err); } return 0;}#undef NRANSI?? 快捷鍵說明
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