AL Econ who know ?

美藍 · 發表於 2004-9-22 00:03:49

The diagrams below show the total cost curves of four firms. Which firm's average cost is always greater than its marginal cost ?

Scholes0821 · 發表於 2004-9-24 22:31:48

is it that one of the bottom left hand corner ??

Zero · 發表於 2004-9-25 00:17:48

[QUOTE=Scholes0821]is it that one of the bottom left hand corner ??[/QUOTE]
i think so.

馬豬 · 發表於 2004-9-25 03:00:34

[QUOTE=Zero]i think so.[/QUOTE]

係咪因為幅diagram有fixed cost???
當output increase o既時候atc 會一路下降
而當atc下降緊o既時候就一定大過mc?????????

Zero · 發表於 2004-9-25 10:31:08

[QUOTE=馬豬]係咪因為幅diagram有fixed cost???
當output increase o既時候atc 會一路下降
而當atc下降緊o既時候就一定大過mc?????????

[/QUOTE]
even ac is decreasing,it's still bigger than mc at any point.....

another way to solve it is to consider the slope

簡拿華路 · 發表於 2004-9-25 19:44:22

搵某一點的ac - 由origin開始畫條線過去,搵slope
所以左上ac先跌後升
右上ac越黎越大
左下ac越黎越細
右下ac漸升

搵某一點的mc - 畫tangent線,搵角度slope
所以左上mc先跌後升
右上mc is constant
左下mc is constant
右下mc漸升

唔該搵人幫我糾正一下.

美藍 · 發表於 2004-9-25 20:06:47

thank you~

馬豬 · 發表於 2004-9-25 23:49:47

[QUOTE=簡拿華路]搵某一點的ac - 由origin開始畫條線過去,搵slope
所以左上ac先跌後升
右上ac越黎越大
左下ac越黎越細
右下ac漸升

搵某一點的mc - 畫tangent線,搵角度slope
所以左上mc先跌後升
右上mc is constant
左下mc is constant
右下mc漸升

唔該搵人幫我糾正一下.[/QUOTE]

都唔係好明呀
可以唔可以解釋多d.........?

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