If a and B are reciprocal to each other, what is one of 2009 AB equal to 2009/1*a*b

If a and B are reciprocal to each other, what is one of 2009 AB equal to 2009/1*a*b

If a and B are reciprocal to each other, then AB = 1.2009, AB is one of 2009 times AB, is it multiplied by 1, or is it equal to one of 2009