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May 18 2024, 18:41:27, Sat [ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, 5, 6, [7], 8 ]
Subject: Re: ECON (MICRO)


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Date Posted: 23:08:00 10/04/04 Mon
In reply to: 牧種ECON琂 's message, "ECON (MICRO)" on 19:25:54 10/03/04 Sun
 и稱........琌琌娩悔ノ

讽稱禦ン单狥﹁

腀種ゑ窥┪硂ン狥﹁τ骸ì祘獽穦

ノ瓜ボ獽穦 Downward sloping, convex......

硂琌и種ǎ..@o@
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[> Subject: Re: ECON (MICRO)


Author:
HKU B(econ. & fin.) Yr. 2
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Date Posted: 02:15:52 10/05/04 Tue
>想問2條好好好簡單既問題:
>
>點解DEMAND CURVE係DOWNWARD-SLOPING既?
>
>同埋
>
>點解條Indifference curve 係convex既?

IC 係 convex preference,係唔一定啱,呢個只係我地既assumption. e.g. $5 @ 橙 & $5 @ 蕉, 如果你有$100係手,而你買左10隻蕉加10個橙,咁你既IC就係convex.相反,你買左20隻蕉或者橙,你既IC就唔係convex. 因為我地假設大部分人既想法都係"average is better than extremes".所以IC既形狀就係convex.

downward sloping demand curve,唔,呢樣野我都唔係好清楚.估計係observe唔到"price不斷上升,quantity demand 都係咁升"呢個現象,所以assume demand curve 係 downward sloping.另外,DMUV(DIMINISHING MARGINAL USED VALUE) 都解釋到點解DEMAND CURVE DOWNWARD SLOPING.

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