#include <iostream>
#include <math.h>
using namespace std;
int main()
{
    double f, u, h = 0.1;
    for (double x = 1; x <= 2; x += h)
    {
        if (x <= 2)
        {
            u = (pow(x, 2) - 7 * x + 3) / (x - exp(x));
        }
        else
        {
            u = pow(atan(x, 2)); 
        }
        
        f = (acos(0.5 - abs(sin(u - 3))) + 3 * x);
            cout << "f(x)=" << f << endl;
    }
    return 0;
}