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雷达卡
From "Advanced Macroeconomics", David Romer,P23原文如下
..........the elasticity of output with respect to the saving rate in the long run is about one-half............even a 50 percent increase in s raises y* only by 22 percent.
按上文的意思，应该是25%才对阿，怎么是22%呢？那位朋友看懂了说一下，谢谢
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