1.8

#include <iostream>
#include <cmath>
using namespace std;
double f(double x, double y){
    double fi = 3 + x*x,
    psi = sqrt(1+x*x)/(1+0.4*x*x),
    L = 2*sin(1+y),
    F = y*fi + psi + L;
    return F;
}
double f1(double x, double y){
    double fi = 3 + x*x,
    L1 = 2*cos(1+y),
    F1 = fi + L1;
    return F1;
}
int main() {
    int n;
    cin >> n;
    double eps, x;
    cin >> eps;
    for(int j = 0; j< n; j++){
        double y,k;
        cin >> x;
        y = -(sqrt(1+x*x)/(1+0.4*x*x))/(3 + x*x);
        k = y - f(x,y)/f1(x,y);
        while(abs(k - y)>eps){
            y = k - f(x,k)/f1(x,k);
            k = y - f(x,y)/f1(x,y);
        }
        cout << x <<' '<< y << endl;
        cout<<f(x,k)<<endl;
    }
    system("pause");
    return 0;
}