一个宏观经济的问题!急求大神解答!Q1Consideracompetitivefirm.ItsmarginalcostfunctionisMC(q)=2qandthemarketpriceis$40.Howmuchoutputwillthisfirmproduce?Q2Consideracompetitivefirm.Itscostfunctionisc(q)=0.5q2

Question

一个宏观经济的问题!急求大神解答!
Q1 Consider a competitive firm. Its marginal cost function is MC(q)=2q and the market price is $40. How much output will this firm produce?
Q2 Consider a competitive firm. Its cost function is c(q)=0.5q2 and the market price is $80. How much output will this firm produce?
Q3 Consider a competitive firm. Its cost function is c(q)=2q2 and the market price is $10. Write down the revenue and the marginal cost function.
最好能有过程,谢谢!

Answer 1

这三道题就是考察你对均衡条件的掌握.
由于是完全竞争市场,均衡条件就是：MC(q)=P
（1）MC(q)=40 ----------> q=20
（2）MC(q)=dc(q)/dq=80 ------------>q=80
（3）MC(q)=dc(q)/dq=4q 令MC(q)=10 得q=2.5;
R=Pq=10X2.5=25.
对于这道题就答完了,我只想说,请楼主认真听课,这道题有何难度可言.