經濟成長 - 經濟

１假設每一工人小時的資本每年成長百分之三，而技術變動則每年成長
　百分之二。若使用三分之一原則，我們可以推論每一工人小時的實質
　國內生產毛額會每年成長百分之？

我的算法：　△Y △A △K
------ = ----- + -------
Y A K

= 2% +3%*(1/3)
= 3%

我這樣算對嗎？？


2.If the U.S. production funciton is Cobb-Douglas with capital share

0.3, output growth is 3 percent per year, depreciation is 4 percent

per year, and the Golden Rule steady-state capital-output raio

is 4.29, to reach the Golden Rule steady state, the saving rate must

be:
a.less than 18 percent

b.more than 18 percent and less than 23 percent

c.more than 23 percent and less than 28 percent

d.more than 28 percent and less than 33 percent

e.more than 33 percent

這題答案為 d，要怎麼算??





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