這題供給線怎麼解阿 - 經濟

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http://i.imgur.com/VIE7UpE.jpg
答案是a
可是我算出來都是2都沒答案
誰會阿~~~

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All Comments

Dora avatarDora2014-07-08
"using the midpoint method"
Zanna avatarZanna2014-07-09
我算是1耶奇怪? (1.2-1)/(0.6-0.5)*(0.6+0.5)/(1.2+1)
Elma avatarElma2014-07-12
=1 這樣有哪裡錯嗎?