#include "stdafx.h"
#include "math.h"
#include <iostream>
using namespace std;
double cos_our (double x, double eps)
{
double func=x;
double a = 1.0;
double q=100.0;
int i=0;
int m=1;
while( abs(func-q) >= eps)
{ q=func;
m++;
i++;
a*=x;
func+=pow(-1,m-1)*a/i;
}
return func;
}
void main()
{
double x, eps;
cin>>x;
cin>>eps;
if (x>-1 && x=<1) cout<<ln(1+x)<<'\t'<<cos_our(x,eps);
else cout<<”otstan Guzhov”;
}