public void QFunctionTest()
{
var function = new QFunction(x, n, 1, k);
Assert.AreEqual(new Fraction(1, 2), function.Calculate());
var function1 = new QFunction(x, n, 2, k);
Assert.AreEqual(new Fraction(0), function1.Calculate());
var function2 = new QFunction(x, n, 3, k);
Assert.AreEqual(new Fraction(0), function2.Calculate());
var function3 = new QFunction(x, n, 4, k);
Assert.AreEqual(new Fraction(0), function3.Calculate());
}
// case if s = 0;
private Fraction StartValueCalculate()
{
var qFunction = new QFunction(_x, _n, _t, _k);
return(qFunction.Calculate());
}