1. Explain and show how a firm that follows the law of diminishing marginal returns can
adjust its production scale in the long run.
2. Explain and show why a monopolistic firm produces an output at which demand is
inelastic in the long run.
3. 如市場獨占者進行逃漏稅行為時,利潤稅仍具有「中立性(neutrality)」嗎?
4. 優勢策略均衡是否為Nash 均衡?而Nash 均衡是否一定是優勢策略均衡?
5. 公平與效率兩者可兼得嗎?請舉例說明。
請就訊息的傳訊(signaling)與篩選(screening)概念說明勞動市場中「大學文憑」的
角色扮演與均衡的型態,並進而說明目前在台灣的大學文憑之價值與價格。(15
分)
Suppose there are two markets, A and B. (15 分)
(1) Suppose the total demand for a good is given as P = 80 −Q and the total supply is
given as P = 2Q . What is the price elasticity of demand, when the market is
clearing?
(2) Suppose the demand for the good in market A is given as P = 80 − 4Q . The good is
provided by a monopolist that has two identical factories, α and β , in markets A
and B respectively. What are the market prices and quantities provided by each
factory, when two markets are perfectly isolated? What are the market prices and
quantities provided by each factory, when freight is costless?
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