问题如下图：
选项：
A. 
B. 
C. 
解释：
老师，这题目一说potential GDP我就蒙了，不知道用什么公式。
请教下这道题目的解题思路。
是不是我们讲的那三种变形是都可以计算potential GDP，然后看题目是有什么条件，就选哪个公式？
我们哪几个公式都是计算potential GDP的吗？
NO.PZ2018091706000021问题如下 Economic ta of a country is showebelow Accorng to the economic ta whiof the three counties hthe highest growth rate of potentiG: Country X. Country Y. Country Z. A is correct. 考点：Cobb-uglproction function 的变形公式： 解析：growth rate of potentiG= growth rate of labor for+ growth rate in labor proctivity X=2.1+2.6=4.7 Y=1.5+1.8=3.3 Z=0.6+1=1.6 Growth rate of labor proctivity + growth rate of labor for问什么不等于 growth rate of output?
NO.PZ2018091706000021 问题如下 Economic ta of a country is showebelow Accorng to the economic ta whiof the three counties hthe highest growth rate of potentiG: Country X. Country Y. Country Z. A is correct. 考点：Cobb-uglproction function 的变形公式： 解析：growth rate of potentiG= growth rate of labor for+ growth rate in labor proctivity X=2.1+2.6=4.7 Y=1.5+1.8=3.3 Z=0.6+1=1.6 growth rate of potentiG是指潜在增长率。取决于，劳动力、资本积累、技术1.为什么这题是两个labor相加？2.为什么不加第二列TPF？我感觉这个是和技术相关。3.如果还有CAPITAL的一列需要加吗？
知识点对应错误 没有数据图片呀
NO.PZ2018091706000021问题如下 Economic ta of a country is showebelow Accorng to the economic ta whiof the three counties hthe highest growth rate of potentiG: Country X. Country Y. Country Z. A is correct. 考点：Cobb-uglproction function 的变形公式： 解析：growth rate of potentiG= growth rate of labor for+ growth rate in labor proctivity X=2.1+2.6=4.7 Y=1.5+1.8=3.3 Z=0.6+1=1.6 总产出增长率-劳动增长率=人均资本增长率，人均资本增长率小的，就是信用质量差的
NO.PZ2018091706000021 问题如下 Economic ta of a country is showebelow Accorng to the economic ta whiof the three counties hthe highest growth rate of potentiG: Country X. Country Y. Country Z. A is correct. 考点：Cobb-uglproction function 的变形公式： 解析：growth rate of potentiG= growth rate of labor for+ growth rate in labor proctivity X=2.1+2.6=4.7 Y=1.5+1.8=3.3 Z=0.6+1=1.6 看完老师们的解答，我发现自己对公式理解有误，我一直把公式里的Y当作output，但实际上Cobb-uglproction function和那些变形公式里的Y都是potentiG 是吗？真实的output不是用这些公式算的。
