8.13 写一个用矩阵法求定积分的通用函数，分别求 sinx,cosx,exp(x)的积分；
个人代码如下：#include
#include
int main()
{
double m,n;
double fun(double m,double n,double (*p)(double));
double fsinx(double);
double fcosx(double);
double fexp(double);
scanf("%lf%lf",&m,&n);
printf("%lf\n",fun(m,n,fsinx));
scanf("%lf%lf",&m,&n);
printf("%lf\n",fun(m,n,fcosx));
scanf("%lf%lf",&m,&n);
printf("%lf",fun(m,n,fexp));
}
//矩阵法求积分的功能函数
double fun(double m,double n,double (*p)(double))
{
int i;
double h,sum;
h=fabs(n-m)/1000;
for(i=0,sum=0;i<1000;sum=sum+(*p)(m+i*h+h/2),i++);
return sum*h;
}
double fsinx(double x)
{
return sin(x);
}
double fcosx(double x)
{
return cos(x);
}
double fexp(double x)
{
return exp(x);
}
sinx加expx定积分计算c语言 8.13 写一个用矩阵法求定积分的通用函数 分别求 sinx cosx exp(x)的积分；...
