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[五常考室第5期]答案

(2007-07-17 08:06:56)
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张五常

经济学

分类: 五常考室
 
 
本期答案:
 

Wealth maximization for a monopolistic seller requires that their marginal revenues in different markets be equal, given the marginal cost of production being the same.  If the elasticities of demand in different markets are not the same, equating marginal revenues implies the prices charged in different markets will be different, hence price discrimination.

 

But price discrimination may occur if and when information costs vary among different customers or in different markets, therefore price discrimination may occur even if elasticities of demand are the same.  There is no systematic relation between information costs and demand elasticities.  The typical example is people bargain when they buy, with each customer ending up paying different prices for the same goods, and this may bear no systematic relation with the elasticities of demand.


 

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请各位同学根据公布的答案给自己客观地打分,不必在此公布,做到心里有数就可以了。以10分为满分,5分为合格,7分为良好,9分为优秀。以后做完100条题目之后,如果平均分可达6分,即达到张五常教授硕士时的水平;如果平均分可达8分,即达到张五常教授博士时的水平。

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