第 22 題 - 解答

#include <stdio.h>

#include <math.h>

int main()

{

   double x1, x2, h, s; 

   printf("請輸入x1值："); 

   scanf("%lf",&x1); 

   printf("請輸入x2值："); 

   scanf("%lf",&x2);  

   h=(x2-x1)/2.0;

   s=h/3*(exp(x1)/(x1*x1+1)+4*exp(x1+h)/((x1+h)*(x1+h)+1)+exp(x2)/(x2*x2+1));

   printf("S=%f\n",s);

   return 0;

}

#include <stdio.h>

#include <math.h>

int main()

{

   double x1, x2, h, s; 

   scanf("%lf",&x1); 

   scanf("%lf",&x2);  

   h=(x2-x1)/2.0;

   s=h/3*(exp(x1)/(x1*x1+1)+4*exp(x1+h)/((x1+h)*(x1+h)+1)+exp(x2)/(x2*x2+1));

   printf("%f\n",s);

   return 0;

}