摘要：#include <stdio.h> #include <math.h> double a, b;//定义全局变量，传递区间值，可尝试指针 double get_num(double m) { double f; f = m * m + 7 * m - 9; return f; } double s 阅读全文

摘要：#include <stdio.h> //进退法求区间 double get_num(double m) { double f; f = m * m + 7 * m - 9; return f; } void search_num(double x1, double h) { double x2, 阅读全文