3. [5 points] The demand equation for DVD players is given by 1: = f(p,q) = 10,000 10p e'\"2 and the demand for blank DVD discs is given by y = 9(1), q) = 50, 000 4, 000g 1019 where p and (3 denote the unit prices, respectively, and :1: and 3; denote the number of DVD players and the number of DVD discs demanded each week. Determine whether these two products are substitute, complementary, or neither