????(oligopoly)????? - PowerPoint PPT Presentation

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????(oligopoly)?????

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Title: ????(oligopoly)?????


1
???? ????????
  • ????????,??????????????

2
????(oligopoly)?????
  • ????????,?????????????????
  • ????????,????????????,??????????
  • ??????,??????????????????,?????????????????,??????
    ??????

3
  • ??????????,???????
  • ????????,????????????????????????
  • ?????????????????????
  • ?????????????
  • ??,????????????????????????????????????????

4
?????????
  • ?????????,????????????????????,??????
  • ??????,????????????????????????
  • ?????????????,?????????????????????,?????
  • ????????,????????(duopoly)?????(multipoly)?

5
????????
  • ??????????????????????????????????????
  • 1)?????????????????????????????????????,??????????
    ??????????????????(conjecture)?
  • ??????????????????
  • 2)?????????????????????,???????????????????????

6
  • ??????????????????,????????????

???? ???? ????? ?????
???????? ??(Cournot)?? ????? ?????(Stackelberg) ??
???????? Bertrand?? Edgeworth?? ???????????
7
1??????????????
  • ???????????
  • ????A?B???????????????Q1200100P,
  • QQAQB
  • ?P121/100( QAQB) C0
  • ?APQACQA
  • 12QA(1/100)QA2(1/100)QAQB
  • ?BPQBCQB
  • 12QB(1/100)QB2(1/100)QAQB

8
  • ???????,????????????,?
  • ?
  • ?
  • QA?QB?????????A???B?????(reaction
    function),???????????????????????

9
QB
  • ??????
  • QAQB400
  • P4
  • ?A?B1600

1200
600
P
QB
1200
600
QA
QA
?????(n/n1)Q n???????.
Q
B
A
C
D
10
  • 2????(PMSweezy,1939)??
  • ??????(kinded demand curve)??
  • ??????????,?????????????????????????(rigid)???????
    ????????,???????????,????????
  • ?????,??????????????????????????
  • ?????,?????????????????????????????????,????????
    ?????,?????????

11
  • ?????????????

P
?E????,MR???
D2
P0??? ????, Q0??? ???? ??D1ED2 ???? ????
D1
MC1
E
P0
MC2
MR1
D1
D2
??
MR2
Q
Q0
?MR1?MR2???,MC????????,???????????????
12
  • 3???????
  • ????,?????????????????
  • ???(Catel)????????????????????????????.
  • ??????????????????????????????????????????????

13
  • ???????????,??????????????????????????

P
MC
E
P0
D
MR
Q
Q0
1.???????? 2.???????????????????????????????????
??????
14
  • ???????????????????????,????????????????????????

P
MC
??????????????????
P0
AC
P1
D
MR
Q
Q0
Q1
??????????????????????????
15
????????????????????
  • 1???????????????????????
  • 2??????????????,?????????????????????
  • 3??????????????????,?????????
  • 4??????????????????????????

16
4?????(Price leadership)
  • ???????????????????????????????????????,??????????
  • ???????????????????,?????????????????????????
  • ??????????????????,??????????????????????

17
???????????
  • ?????????????????????
  • ?????,??????????????????
  • ?????????
  • ??????????
  • ????????????????????
  • ??????????
  • ??????????
  • ????(??????)

18
1???????????
  • ??????????,???????,???????,?????????
  • A??????
  • ????????????,????????????????,????????
  • n????????????????????,?????????????????????????,??
    ?????????????
  • n????????????????????????,??,??????????????????,??
    ?????????,???????????????,????????????

19
  • B???????
  • ?????????????????????????????,????????????????????
    ??????????,?????????????????????,?????????????????
    ???????????
  • ????????????????????????,?????????
  • ????,???????,??????????????????????

20
????????????????
??????? ???????
??
?? 4 4
??? 0 12
??
?? 4 4
??? 0 8
21
  • C??????
  • ?????,?????????

P
???????
MC
AC
P1
D
PL
MR
QL
QM
Q
Qe
22
?????????(costplus pricing)
  • ????????????,??????,????????????????
  • ??????????????????????????????
  • ???????????????????????????????
  • ACAVCAFCTVC/QTFC/Q
  • ??????????????r?????
  • ACr
  • PACACrAC(1r)?????

23
  • ??????????????????????????????????????,??????????
    X?,????????????X/Q???,?????
  • PAVCAFCX/Q
  • ????
  • ?????????
  • ???????????????????5???,??????10????????,?????????
    ?125 000??????80,?100 000????20???,?????????1
    0??????????,??????????

24
  • ?
  • 20????10??????????????????2???????????????100
    000????????,???????????????????
  • ??,???????17 000???

25
  • ??????????????????,?????????????????????????
  • ?????????????,????????????????
  • ????????????????????????????????????????,?????
  • ??????????????(????)??????????????????

26
???????1??????????
???? ????? ???? ???????? ??
?? ??? ?? ??(??) ?????
???? ?? ???? ??(??) ????
??? ?? ???(??)
?? ??
?? ??
?? ??
?? ??
???? ???
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