問題詳情
小張對於蘋果（xA）與香蕉（xB）的效用函數為u1 (xA,xB) = xA + 2xB，小郭對於蘋果與香蕉的效用函數則為u2 (xA,xB) = 3xA + 2xB。有一天，兩人同時走進一間水果店買水果，則下列何者正確？▓▓▓▓▓９８年公務人員高等考試三級考試▓▓▓▓▓
(A)若小張離開水果店時帶著蘋果，則小郭也應該會買蘋果
(B)若小張離開水果店時帶著香蕉，則小郭也應該會買香蕉
(C)若小張離開水果店時同時帶著一些蘋果和一些香蕉，則小郭也應該會同時買蘋果和香蕉
(D)無法由小張的購買結果推論小郭的購買情形
(A)若小張離開水果店時帶著蘋果，則小郭也應該會買蘋果
(B)若小張離開水果店時帶著香蕉，則小郭也應該會買香蕉
(C)若小張離開水果店時同時帶著一些蘋果和一些香蕉，則小郭也應該會同時買蘋果和香蕉
(D)無法由小張的購買結果推論小郭的購買情形
參考答案
答案：A,D
難度：非常困難0
統計：A(1),B(0),C(0),D(2),E(0)
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