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simp1 3.c
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simp1 3.c
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#include<stdio.h>
float func(float);
void main()
{
int a,b;
float h;
float sum=0;
printf("enter lower ,upper limit and value of h:\n");
scanf("%d %d %f",&a,&b,&h);
float t;
int k=h;
float sum1=0;
t=func(a)+func(b);
while(k!=b+h)
{
sum+=func(k);
k=k+2*h;
}
k=2*h;
printf("%f\n",4*sum);
while(k!=b)
{
sum1+=func(k);
k=k+2*h;
}
printf("%f\n",2*sum1);
sum=(4*sum+t+sum1*2)*h;
printf("%f",sum/3);
}
float func(float x)
{
return (1/(1+x*x));
}