/// <summary>
/// Overrided method GetHashCoed
/// </summary>
/// <returns>Hash code of instance</returns>
public override int GetHashCode()
{
if (Coefficients == null)
{
return(0);
}
double result = 0;
int hashCoef = 11;
for (int i = 0; i < Coefficients.Length; i++)
{
result += Coefficients[i] * Math.Pow(hashCoef, Degree - i);
}
return((int)(result * VariableSymbol.GetHashCode()));
}