public Complex_number Product(Complex_number num)
{
double productReZ = GetReZ() * num.GetReZ() - GetImZ() * num.GetImZ();
double productImZ = GetImZ() * num.GetReZ() + num.GetImZ() * GetReZ();
return(new Complex_number(productReZ, productImZ));
}
public Complex_number Difference(Complex_number num)
{
return(new Complex_number(GetReZ() - num.GetReZ(), GetImZ() - num.GetImZ()));
}
public Complex_number Sum(Complex_number num)
{
return(new Complex_number(GetReZ() + num.GetReZ(), GetImZ() + num.GetImZ()));
}