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长颈鹿大姐 · 2020年07月25日

问一道题：NO.PZ2018091706000020

  1. CFA II
  2. Economics Analysis

问题如下：

Economic data of a country is showed below:

According to the economic data, which of the three counties most likely rely on the capital deepening?

选项：

A.

Country X.

B.

Country Y.

C.

Country Z.

解释：

A is correct.

考点：Cobb-Douglas production function 的变形公式

解析：先写出变形公式：

Growth rate of labor productivity= Growth rate of TFP+ Growth rate of capital deepening（假设劳动力恒定不变）

capital deepening%=△y/y-△T/T

X=2.6-0.8=1.8

Y=1.8-1=0.8

Z=1-(-0.1) =1.1

v先写出变形公式：

Growth rate of labor productivity= Growth rate of TFP+ Growth rate of capital deepening（假设劳动力恒定不变）


老师 这个结论是变形几得出的？是因为看到了什么因素所以选择了这个公式的变形？

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2 个答案

丹丹_品职答疑助手 · 2020年07月26日

嗨，爱思考的PZer你好：


同学你好，本题是根据题干中给出的growth of labor productivity，根据原版书

Defining y = Y/L as the output per worker or (average) labor productivity and k = K/L as the capital- to- labor ratio, the above expression becomes y = AF(k,1) Specifying the Cobb–Douglas production function in output per worker terms, where again lower case letters denote variables measured on a per capita basis, we get y = Y/L = A(K/L)α(L/L)1–α = Akα

我们进行下列计算。请知悉


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努力的时光都是限量版，加油！


源_品职助教 · 2020年07月26日

嗨，从没放弃的小努力你好：


对的，就是看题目给你什么条件，然后选择对应的公式进行核算。

这题所用公式就是柯布道格拉斯的推论，公式使用文字陈述的，在讲义和答案解析中都有。


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就算太阳没有迎着我们而来，我们正在朝着它而去，加油！


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