問題詳情
1.如下列式子所示，假設X的需求量（QX)決定於其價格（PX)、消費者所得（I)及 F的價格(Py);且QX= 175-2PX—O.O5I+05Py，請回答下列三個問題：（15%)
(1)1是正常物品或劣等物品？為什麼？
(1)1是正常物品或劣等物品？為什麼？
參考答案
答案：D
難度：簡單0.858869
統計：A(40),B(351),C(297),D(4193),E(1)
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