厂商进入或退出一个行业是完全自由和毫无困难的,体现的完全竞争市场的条件是()。
A.信息流动性
B.产品同质性
C.大量的买者和卖者
D.资源流动性
A.信息流动性
B.产品同质性
C.大量的买者和卖者
D.资源流动性
第1题
A.信息完全性
B.产品同质性
C.大量买者和卖者
D.资源流动性
第6题
假设某一特殊行业的信息如下:
QD=6500-100P市场需求
QS=1200P市场供给
C(q)=722+q2/200厂商总成本
MC(q)=2q/200
厂商边际成本
假定所有厂商完全同质,而且市场是完全竞争的。
(1)计算均衡价格、均衡产量、厂商供给产量和每家厂商的利润。
(2)在长期将有厂商进入还是退出市场?试解释。进入或退出将会对市场产生何种影响?
(3)在长期,每家企业销售其产品的最低价格为多少?利润是正的、负的还是为零?解释你的结论。
(4)在短期,每家企业销售其产品的最低价格为多少?利润是正的、负的还是为零?解释你的结论。
Suppose you are give the following information about a particular industry:
QD=6500-100P Market demand
QS=1200P Market supply
C(q)=722+q2/200 Firm total cost function
MC(q)=2q/200 Firm marginal cost function
Assume that all firms are identical and that the market is characterized by pure competition.
a. Find the equilibrium price, the equilibrium quantity, the output supplied by the firm, and the profit of each firm.
b. Would you expect to see entry into or exit from the industry in the long run? Explain. What effect will entry or exit have on market equilibrium?
e. What is the lowest price at which each firm would sell its output in the long run? Is profit positive, negative, or zero at this price? Explain.
d. What is the lowest price at which each firm would sell its output in the short run? Is profit positive, negative, or zero at this price? Explain.
第7题
第8题
A.市场上有很多的生产者和消费者
B.企业生产的产品是同质的
C.可以自由进入或退出市场
D.生产者可以在一定程度上控制产品价格
E.买卖双方对市场信息都有充分的了解
第11题
A.在长期,它可以通过增加以一倍的投入获得加倍的利润
B.当利润开始减少时,他可以提高价格
C.在长期,他增加投入可以获得相同的利润
D.当有厂商进入这一行业,他将得不到利润