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【单选题】
假定下表是 需求函数 Q d =500-100P 在一定价格范围内的需求表: 价格(元) 1 2 3 4 5 需求量 400 300 200 100 0 ( 1 )求出价格 2 元和 4 元之间的需求的价格弧弹性。 ( 2 )根据给出的需求函数,求 P=2 是的需求的价格点弹性。
A.
(1)1.5 (2)2/3
B.
(1)2/3 (2)1.5
C.
(1)1.5 (2)1/3
D.
(1)1.2 (2)2/3
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