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2023-03-11 20:36Module 1-書(2022-L1V1)P20-(1)第4段的倒數(shù)第3以及倒數(shù)第2句話,請問怎么理解?為什么This removes the income effect of the price decrease and allows us to isolate the pure substitution effect?以及,為什么We find that in State 2, he would buy more coffee than in State 1?(2)倒數(shù)第2段中,不太能理解,為什么If the good is normal, the income effect reinforces the substitution effect, both leading to a negatively sloped demand curve. But if the good is inferior, the income effect and the substitution effect work in opposite directions? 請?jiān)敿?xì)展開解析
所屬:CFA Level I > Economics 視頻位置 相關(guān)試題
來源: 視頻位置 相關(guān)試題
1個(gè)回答
roushan助教
2023-03-13 21:32
該回答已被題主采納
(1)第4段的倒數(shù)第3以及倒數(shù)第2句話,請問怎么理解?為什么This removes the income effect of the price decrease and allows us to isolate the pure substitution effect?以及,為什么We find that in State 2, he would buy more coffee than in State 1?
”If we adjusted the amount of money he would have to pay to lock in the lower price of coffee until he is just indifferent between the two states of the world“這句話告訴我們是要把S2和S1兩種情況的實(shí)際購買力控制在一樣的范圍,于是對于S來說,價(jià)格下降,導(dǎo)致咖啡需求的增加單純是由替代效應(yīng)引起的。因?yàn)镾2的咖啡價(jià)格是低于S1的,所以S2的咖啡需求量大于S1的咖啡需求量。
(2)倒數(shù)第2段中,不太能理解,為什么If the good is normal, the income effect reinforces the substitution effect, both leading to a negatively sloped demand curve. But if the good is inferior, the income effect and the substitution effect work in opposite directions?
如果商品是正常商品,價(jià)格下降,不僅替代效應(yīng)下需求量是上升的,在收入效應(yīng)下需求量也是上升,所以說收入效應(yīng)在替代的基礎(chǔ)上強(qiáng)化了價(jià)格下降對需求上升的影響。
對于劣等品來說,價(jià)格下降,替代效應(yīng)下需求上升,但是在收入效應(yīng)下,需求是下降的。所以說兩種商品是反向變化的。
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追問
什么叫“對于S來說”?S是誰?
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追答
state 2
