MRT定義 - 經濟
By Gilbert
at 2010-08-07T18:02
at 2010-08-07T18:02
Table of Contents
書中提到
MRT的意義為:1.X商品產出多增加1單位,Y商品減少的單位。
2.用數學式可寫成MRT=-dY/dX > 0
這裡我對照圖形產生了一個疑問
在PPC為成本遞增或成本遞減的情況下(成本固定下小弟就沒有這個疑問)
圖形是一圓滑曲線
用定義1.來看圖形的話MRT是一條割線(X1,X2間隔一單位的割線)
定義2.來看的話是一點的瞬間變動量
這時候我就搞不懂為什麼是用瞬間變動量來定義MRT,
因為MRT不是指X商品產出多增加1單位,Y商品減少的單位嗎?
--
MRT的意義為:1.X商品產出多增加1單位,Y商品減少的單位。
2.用數學式可寫成MRT=-dY/dX > 0
這裡我對照圖形產生了一個疑問
在PPC為成本遞增或成本遞減的情況下(成本固定下小弟就沒有這個疑問)
圖形是一圓滑曲線
用定義1.來看圖形的話MRT是一條割線(X1,X2間隔一單位的割線)
定義2.來看的話是一點的瞬間變動量
這時候我就搞不懂為什麼是用瞬間變動量來定義MRT,
因為MRT不是指X商品產出多增加1單位,Y商品減少的單位嗎?
--
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經濟
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