c语言求一元二次方程的根答:Ax2+bx+c=0 求一元二次方程:ax2+bx+c=0 的根;输入三个实数a,b,c的值,且a不等于0。#include <stdio.h>#include <math.h>int main(){;float a,b,c,x1,x2,d;printf("输入方程的三个系数:");scanf("%f %f %f",&a,&b,&c);if(a!=0);{;d=sqrt(b*b-4*a*c);x1...
C语言程序求方程ax^2+bx+c=0的根,用3个函数分别求当b^2-4ac大于0,等于...答:b-d)/a);}void _f(double a,double b,double d){d=sqrt(-d),a=-b/a/2,b=d/a/2; printf("x1 = %f%+fi\nx2 = %f%+fi\n",a,b,a,-b);}void f0(double a,double b){printf("x1=x2 = %f\n",-b/a/2);}int main(int argv,char *argc[]){double a,b,c,d;...