作者squallpu (蚂蚁爬)
看板Grad-ProbAsk
标题Re: [问题] 个经的一些题目
时间Sat Apr 4 09:16:16 2009
※ 引述《tiesto1114 (Tiesto)》之铭言：
: Suppose that all fims in a given idustry have the same supply curve given by
: Si(p)=2p when p is greater than or equal to $2 and Si(p)=0 when p is less than
: $2. Suppose that market demand is given by D(p)=12-p. If firms continue to
: enter the industry so long as they can do so profitably, the equilibrium price
: must be closet to
: a.$5
: b.$4
: c.$2.40
: d.$2
: e.$1.75
: 没什麽头绪~囧
请问楼上的大大 数值是怎麽算出的??
我只知道长期均衡为2 但短期没有厂商家数的话 该如何算出市场均价
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