public static void DerivativeAndPrintTest()
{
Console.WriteLine("########## PART 5 ############");
Console.WriteLine();
int[] coefficientsOne = { 4, -5, 1 };
var polyOne = new Polynomial(coefficientsOne);
Console.Write("Polynomial: ");
polyOne.ToString();
Console.Write("Derivative: ");
polyOne.Derivative().ToString();
int[] coefficientsTwo = { 1, 1, 0, 1 };
var polyTwo = new Polynomial(coefficientsOne);
Console.Write("Polynomial: ");
polyTwo.ToString();
Console.Write("Derivative: ");
polyTwo.Derivative().ToString();
}