需求函數 - 經濟
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By Dora
at 2008-12-29T22:29
at 2008-12-29T22:29
Table of Contents
有個比較直觀的想法 不曉得對不對
如果說原來的需求為負斜率
從函數可知道斜率為-3,q的係數
而水平加總後的,p軸截距不會變,但是接近原點(p較小)的部份會變得較寬
所以變得平坦(應該說變成3分之一)
對照選項後可知道 p=20-Q 符合推測
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經濟
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By Tom
at 2009-01-03T03:20
at 2009-01-03T03:20
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