申論題

 1. Let the inverse demand function of good t in a country be P_x = 5- D_x, where P. is the price of z and Ds is the quantity demanded. The quantity supplied is Q_x and the inverse supply function is P_x =3+ Q_x. Answer the following questions.

C. (8 points) Calculate the consumer and producer surplus under antarky and trade. Measure the gains from trade in terms of surplus.