經濟學 - 考試
By Carolina Franco
at 2012-12-12T01:05
at 2012-12-12T01:05
Table of Contents
1.[100鐵路高員三級]
二家生產同質商品的廠商(A、B)進行 Bertrand價格競爭,二家的廠商邊際成本分別為
MCa=10,MCb=8。 若市場的需求函數為 P=60-Q,則下列均衡結果何者正確?
(A) P=0 (B)P=8 (C)B廠商利潤=0 (D)B廠商利潤=100
解答:(D)
想法: Bertrand競爭為價格競爭,但不知道怎麼利用上面資訊寫出A、B廠商個別利潤以
Pa、Pb表示的方程式,只知道價格會落在8~10之間。
2.[98鐵路高員三級]
一獨佔性競爭廠商長期平均成本函數為LAC=q^2-16q+160,當產業達到長期均衡時,
其產品定價=100,此時Lerner Index為何?
(A)0.12 (B)0.24 (C)0.36 (D)0.48
解答:(B)
想法:Lerner Index=(P-MC)/P,但不知道怎麼計算出MC...
謝謝解答。
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