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

二、(25%)最近因中美經貿衝突與新冠肺炎擴散,全球經濟蕭條,成為大家關切的議 题。各國皆主動採行貨幣的量化寬鬆(QE)政策,盼能脫離經濟困境。觀察政府在可 使用的政策中,貨幣政策經常被列為首選工具。請分析以貨幣政策來對抗經濟不景 氣之效果及其可能的代價。

1.(15%)擴大政府財政支山的三個主要財源為何?(請寫出三個政府支出的融通方式 並解釋之)

2.(10%)中央银行發行的貨幣,可透過何種管道進入企業與家戶單位?

1.(5%)總和供給曲線(AggregateSupply Cuve)

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

4.(5%)菲利普曲線(Phillips Curve)

5.(5%)吉尼係數(GiniCoefficient)

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%)