Лабораторные работы 7_8 / LAB8

# include <math.h>
# include <iostream.h>
double F(double x);
double X[8]={-0.96028986,-0.79666648,-0.52553242,-0.18343464,
0.18343464,0.52553242,0.79666648,0.96028986};
double A[8]={0.10122854,0.22238103,0.31370664,0.36268378,
0.36268378,0.31370664,0.22238103,0.10122854};
double Gauss(double a, double b, int n)
{
int i;
double ti,y=0;
for (i=1; i<=n; i++)
{
ti=((a+b)/2)+(b-a)*X[i-1]/2;
y=y+((b-a)/2)*A[i-1]*F(ti);
}
return y;
}

double F (double t)
{
return (1/(log(1+t)));
}

void main (void)
{
double a,b;
a=1;
b=3;
int n=8;
csr(0);
cout<<"\n ‡­ зҐ­ЁҐ Ё­вҐЈа « : "<<Gauss(a,b,n);
waitpress();
}