?Why the long-run supply curve might downward?
?Firms may have different costs.?External Economies.汪艳
经济管理学院
双语教学示范课程
462013-7-23
An Increase in Demand in the Short Run and Long Run
(a) Initial Condition
P
MC1P1
P
LAC1P1
AShort-run supply D10Q (firm)0
Q1
Q (market)472013-7-23
汪艳
经济管理学院
双语教学示范课程
(b) Short-Run Response
PProfitP2MC1LAC1PS1P2P1ABP1D2D10Q (firm)0Q1
Q2Q (market)汪艳
经济管理学院
双语教学示范课程
482013-7-23
(c) Long-Run Response
PPS1P2P1P
3
BAMC2LAC2CP3D1Q1Q2S2D2Long-runsupply0Q (firm)0Q3Q (market)汪艳
经济管理学院
双语教学示范课程
492013-7-23
?While a competitivefirm is a price taker, a monopolyfirm is a price maker.
汪艳
经济管理学院
双语教学示范课程
502013-7-23