長期邊際成本與勞動邊際產量 - 經濟
By Freda
at 2012-11-28T15:55
at 2012-11-28T15:55
Table of Contents
※ 引述《moondark92 (明星黯月)》之銘言:
: ※ 引述《k84526991 (哇哈哈)》之銘言:
: : LMC=d(LTC)/dQ=d(Pl*L+Pk*K)/dQ=Pl*(dL/dQ)+Pk*(dK/dQ)=Pl/MPl+Pk/MPk
: : 又成本極小一階條件為MPl/Pl=MPk/Pk
: dQ=MPK dK + MPL dL (MPK,MPL都只是偏微分)
: 令MPl/Pl=MPk/Pk=1/t
: LMC=d(LTC)/dQ=d(Pl*L+Pk*K)/dQ=(Pk dK+Pl dL)/(MPK dK + MPL dL)
: =(tMPK dK + tMPL dL)/(MPK dK + MPL dL)=t=Pl/MPl=Pk/MPK
: : 上式可以改為LMC=2*Pl/MPk 請問上面推導哪裡錯了?
: : 因為答案是LMC=Pl/MPl
: : 小弟不解??
我知道正確的推法,只是我看不出錯誤的推法哪裡有問題?
--
: ※ 引述《k84526991 (哇哈哈)》之銘言:
: : LMC=d(LTC)/dQ=d(Pl*L+Pk*K)/dQ=Pl*(dL/dQ)+Pk*(dK/dQ)=Pl/MPl+Pk/MPk
: : 又成本極小一階條件為MPl/Pl=MPk/Pk
: dQ=MPK dK + MPL dL (MPK,MPL都只是偏微分)
: 令MPl/Pl=MPk/Pk=1/t
: LMC=d(LTC)/dQ=d(Pl*L+Pk*K)/dQ=(Pk dK+Pl dL)/(MPK dK + MPL dL)
: =(tMPK dK + tMPL dL)/(MPK dK + MPL dL)=t=Pl/MPl=Pk/MPK
: : 上式可以改為LMC=2*Pl/MPk 請問上面推導哪裡錯了?
: : 因為答案是LMC=Pl/MPl
: : 小弟不解??
我知道正確的推法,只是我看不出錯誤的推法哪裡有問題?
--
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經濟
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By Ingrid
at 2012-12-02T14:20
at 2012-12-02T14:20
By Audriana
at 2012-12-03T00:56
at 2012-12-03T00:56
By Bennie
at 2012-12-07T19:58
at 2012-12-07T19:58
By Valerie
at 2012-12-11T06:13
at 2012-12-11T06:13
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