/// <summary>
/// Multiplies two polynomials
/// </summary>
/// <param name="a">The first multiplier</param>
/// <param name="b">The second multiplier</param>
/// <returns></returns>
public static Polynomial Multiply(Polynomial a, Polynomial b) {
if (a == null)
throw new ArgumentNullException(nameof(a));
if (b == null)
throw new ArgumentNullException(nameof(b));
Polynomial result = new Polynomial(new double[0]);
for( int i = 0; i <= a.Degree ; i++ )
result += b.Multiply(a[i], i);
return result;
}
