1.7 b

#include<iostream>
#include<cmath>

using namespace std;

int main()
{
    double y, x, t, eps; int i,n;

    cout << "enter eps = ";
    cin >> eps;
    cout << "enter n = ";
    cin >> n;
    for (int j = 0; j < n; j++) {
        cout << "enter x = ";
        cin >> x;
        i = 0;
        y = 0;
        t = 1;
        while (abs(t) > eps)
        {
            y += t;
            i++;
            t = -t * pow(x*x - x + 1, 2) / (2*i*(2*i-1));
        }
        cout << y << endl;
        cout << cos(x*x - x + 1) << endl;
    }

    system("pause");
    return 0;
}