計數效用分析的缺點? - 經濟

By Agnes
at 2009-08-04T12:08
at 2009-08-04T12:08
Table of Contents
不好意思 小弟經濟學原理不太穩
遇到一些問題來請教
"如果要由計數效用分析法推出需求函數
由於他建立在一些不必要的假設下
結果不具一般性
且無法對消費需求法則提出合理說明"
這句話的前半段我大概懂
是因為要求MU遞減 貨幣MU不變 且消費者可數出每一單位才或帶來多少效用
而現實中這些假設無法普遍存在 所以不具一般性
後半段我就不太瞭解...為什麼無法提出合理說明呢
由MUx/Px = 貨幣邊際效用(懶搭)
可知Px上升 Qx下降
合理說明是指多完整呢? (相對下序數分析推論過程比較合理?)
麻煩哪位懂的給個方向~
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