5.(5%)吉尼係數(GiniCoefficient)

1.(5%)總和供給曲線(AggregateSupply Cuve)

2.(5%)購買力平價說(Theory of Purchasing Power Parity)

3.(5%) 利率平價說(Theory of Interest Rate Parity)

4.(5%)菲利普曲線(Phillips Curve)

1.(15%) Two persons are involved in a situation where the public good, G, is privately provided. The utility function of each individual is denoted as ui(G,x) = ai InG + xi, for all i = 1,2 where x is a private good. Denote gi as the amount of the public good contributed by the individual i such that G = g1 +g2. Each individual's budget constraint is shown as xi + gi = my. Assume a1 ＜ a2. How much will the individual 1 contribute, i.e. g1, in equilibrium?

2.(10%) Consider the game facing Player A and B below where X and Y both are integers. Nash equilibrium is (Up, Left). Find out the values of X and Y.

(A) What is Pareto efficiency? (5%)

(B) Does oligopoly imply inefficiency necessarily? Why? (5%)

(A) What is the tragedy of the commons? (5%)

(B) And how to fix it? (5%)