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鑫 · 2022年11月02日

不太理解

NO.PZ2021071301000002

问题如下:

One reason for the downward sloping aggregate demand curve is that lower prices imply real exchange rates:

选项:

A.

devaluation, which makes domestic goods cheaper, leads to a higher level of net exports.

B.appreciation,which makes domestic goods more expensive, leading to a higher level of net exports. C.appreciation,which make the country's imports and exports less competitive, leading to a decline in net exports.

解释:

A is correct.

Lower prices lead to a lower real exchange rate, which makes domestic goods cheaper for people in other countries, leading to a higher level of net exports.


较低的价格水平导致较弱的实际汇率,使国内产品对其他国家的人来说更便宜,进口竞争力下降,导致净出口水平上升。

根据Real D/F = Nominal D/F *P F / P D ,国内物价水平P D低时,实际汇率不应该增加吗?

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已采纳答案

笛子_品职助教 · 2022年11月03日

嗨,努力学习的PZer你好:


根据Real D/F = Nominal D/F *P F / P D ,国内物价水平P D低时,实际汇率不应该增加吗?

Hello,亲爱的同学!

公式里的Real D/F表示外币的实际汇率,而本题问的是本币的实际汇率。所以不一样的了。


我们看本题:

One reason for the downward sloping aggregate demand curve is that lower prices imply real exchange rates:

这里虽然没指明 real exchange rates是哪个国家的,但是没有特别指明,一般就是指本币实际汇率。


我们看汇率表达式,d/f,F是base currency,因此FX real(d/f)是表示外币(f )的实际汇率。

在本国物价下跌时,也就是CPId下跌的时候,FX real(d/f)增加,也就是外币的实际汇率增加,对应本币的实际汇率下降。

因此A选项里的devaluation是正确的。


同学在使用这个公式的时候,要特别注意有一个转换呦。


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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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