A.厂商可以自由进入市场,市场竞争程度激烈
B.市场有控制价格的权利,并且可以对消费者实施价格歧视
C.厂商所面临的需求曲线和边际收益曲线不再重合
D.厂商按照边际收益与边际成本相等进行生产,并且在长期可以获得超额利润
A.9.85%
B.9.35%
C.8.75%
D.9.64%
A.9.85%
B.9.35%
C.8.75%
D.8.65%
函数至少在取a、b、c、d四个参数值时与U形平均成本曲线相一致。
Suppose the long - run total cost function for an industry is given by the cubic equation TC =a+bq+cq2+dq3. Show (using calculus ) that this total cost function is consistent with a U - shaped average cost curve for at least some values of a, b, c, d.
A.9.85%
B.9.35%
C.B.75%
D.9.64%