Consider an exchange economy with two goods (x and y) and two agents (a and b). Agent a has preferences represented by ua(xa, ya) = xaya and endowment ( a x , a y ) = (2, 3). Agent b has preferences represented by ub(xb, yb) = min{2xb, yb} and endowment ( b x , b y ) = (6, 1). (a) Compute and draw the contract curve, the core, and all Walrasian equilibria. (b) Repeat part (a), but where agent a has preferences represented by max{2xa, ya}.