public static Polynomial Substract(Polynomial a, Polynomial b)
{
if ((a == null) || (b == null))
throw new ArgumentNullException();
Polynomial c=new Polynomial(b.ToArray());
for (int i = 0; i < c.Length; i++)
c[i] = -c[i];
return Add(a,c);
}
public static Polynomial Add(Polynomial a, Polynomial b)
{
if ((a==null)||(b==null))
throw new ArgumentNullException();
double[] firstArray = a.ToArray();
Array.Reverse(firstArray);
double[] secondArray = b.ToArray();
Array.Reverse(secondArray);
double[] resultArray=new double[Math.Max(a.Length,b.Length)];
for (int i = 0; i < firstArray.Length; i++)
resultArray[i] = firstArray[i];
for (int i = 0; i < secondArray.Length; i++)
resultArray[i] += secondArray[i];
Array.Reverse(resultArray);
return new Polynomial(resultArray);
}
