#include <iostream>
#include <iomanip>
#include <cmath>
 
using namespace std;
 
double s(double x, double eps = 1e-10)
{
    double a = x*x*x;
    x = x*x;
    double sum = a/3.0;
    for(int k = 2; fabs(a) >= 4*eps*k*k; ++k)
    {
        sum += (a*=-x)/(4.0*k*k-1);
    }
    return sum;
}
 
 
 
int main(int argc, const char * argv[])
{
    for(double x = 0.1; x <= 1.0; x += 0.1)
    {
        cout << setw(4) << x << setw(12)
            << ((1+x*x)*atan(x)-x)/2.0
            << setw(12) << s(x) << endl;
    }
}
 
 
 

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