public double ReturnNewtonDerivative(double x)
{
HNode hNode = new HNode();
return((Calculate(x + hNode.Calculate(x)) - Calculate(x)) / hNode.Calculate(x));
}
private double CalculatePolynomialDerivative(double x, int order)
{
HNode hNode = new HNode();
return(ReturnNewtonPolynomial(x, order).Calculate(x) / Math.Pow(hNode.Calculate(x), order));
}