NO.PZ2018091706000020
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
我的思路是,题目问rely on capital deepening,会直接想到因为developing国家和developed国家,又因为ΔY/Y=Δy/y+ΔL/L,而ΔY/Y代表了potential GDP的增速,developing国家的potential GDP增速要大于developed国家的potential GDP的增速,所以只要看哪个国家Δy/y+ΔL/L最大,就说明它就是developing国家,也就是最rely on capital deepening,这样的思路难道不对吗?求解