作者dyuman ( 没有那种命阿)
看板Grad-ProbAsk
标题[商管][经济]-高应大98-经管(甲组)
时间Sun Jan 10 15:37:08 2010
7.Suppose for some firm that average totla cost is minimized at Q1 units of
output. For a monopolistically competitive firm in long-run equilibrium,
Q1
A.is also the level of output at which marginal cost equals average total
cost.
B.exceeds the level of output at which there is a point of tangency between
the demand curve and the average total cost curve.
C.exceeds the level of output at which marginal revenue equals marginal cost.
D.All of the above are correct.
想法：独占性竞争厂商产量会低於完全竞争厂商，因为在AC下降的地方生产，而不是
在AC最低点 ? 里面似乎没有这个选项 ?
13.For a monopolist , marginal revenue is
A.positive when the demand effect is greater than the supply effect.
B.positive when the monopoly effect is greater than the competitive effect
C.negative when the price effect is greater than the output effect .
D.negative when the output effect is greater than the price effect.
想法：需求效果 ? 供给效果 ? 独占效果? 竞争效果? .....独占有这些效果 ?
拜托各位了 !!!!
感激不尽 !!!!
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1F：推 tyshowman:第一题是D 你的观念正确 会疑惑可能是英文没看清楚 01/10 19:46
2F：→ tyshowman:第二题在干麻我也不清楚 还请高人解答.. 01/10 19:48
3F：→ ecoHYL:第二题意思应该是在问弹性。 当MR为正，此时的需求弹性>1 01/10 19:55
4F：→ ecoHYL:MR为负，此时需求弹性<1。 01/10 19:56
5F：→ ecoHYL:因为弹性刚好就包含那两个效果 01/10 19:57
6F：→ yohobasa:第一题应该是A吧 01/11 08:06