5. Consider a industry has two firms which produce heterogeneous goods y and y2. Suppose each having marginal costs equal to zero and the consumers' inverse demand functions are given by P1 = 20 - 2y1 - y2 P2 = 20 - Y1 - 292 (a) (10%) Show the Cournot equilibrium output for firm 1. (b) (10%) Show the Bertrand equilibrium price for y.