經濟學的邊際效用,我算錯了嗎... - 考試
By Eartha 
at 2017-04-17T00:08
at 2017-04-17T00:08
Table of Contents
http://i.imgur.com/ByEGCUe.jpg 
http://i.imgur.com/3hI3ioL.jpg
這一題不是應該像第二張圖寫的,兩式連立求X、Y的最適量嗎?
 
但我驗算了3、4次,每次都變成19X=55,這樣根本不對,
 
有高手能指點迷津否....
 
謝謝....
 
--
    http://i.imgur.com/3hI3ioL.jpg
這一題不是應該像第二張圖寫的,兩式連立求X、Y的最適量嗎?
但我驗算了3、4次,每次都變成19X=55,這樣根本不對,
有高手能指點迷津否....
謝謝....
--
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        考試
        
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