經濟學生產者剩餘問題 - 考試
By Oscar
at 2013-11-07T00:18
at 2013-11-07T00:18
Table of Contents
※ 引述《oay ()》之銘言:
: 市場需求函數:QD=120-p
: 市場供給函數:QS=20+p
: 我算出來生產者剩餘是2250
: 但解答給的是1050
: 畫圖型來看,供給線不是從橫軸20出發嗎?生產者剩餘不是梯型面積??
: 是那裡出錯了捏?
生產者剩餘(producer surplus),生產者銷售一個東西,「實際售價」超過他「最低要求
價款」的部分~
所以也可以看成 生產者實際收入-所要求最低收入=經濟利潤
但是因為 市場供給函數:QS=20+p
市場需求函數:QD=120-p
均衡時 Q=70 P=50
但是要當Q >= 20 時才有利潤
而 Q <= 20 有損失
所以 當 Q <= 20 損失= 20 X 20 X 1/2 = 200
當 70 >= Q >= 20 利潤= 50 X 50 X 1/2 = 1250
所以P.S=1250-200=1050
--
: 市場需求函數:QD=120-p
: 市場供給函數:QS=20+p
: 我算出來生產者剩餘是2250
: 但解答給的是1050
: 畫圖型來看,供給線不是從橫軸20出發嗎?生產者剩餘不是梯型面積??
: 是那裡出錯了捏?
生產者剩餘(producer surplus),生產者銷售一個東西,「實際售價」超過他「最低要求
價款」的部分~
所以也可以看成 生產者實際收入-所要求最低收入=經濟利潤
但是因為 市場供給函數:QS=20+p
市場需求函數:QD=120-p
均衡時 Q=70 P=50
但是要當Q >= 20 時才有利潤
而 Q <= 20 有損失
所以 當 Q <= 20 損失= 20 X 20 X 1/2 = 200
當 70 >= Q >= 20 利潤= 50 X 50 X 1/2 = 1250
所以P.S=1250-200=1050
--
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