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设 $\underbrace{\ln\ln\cdots\ln}_{k}n=\underbrace{\ln(\ln(\ln\cdots(\ln}_{k} n)\cdots))>0$, 问 $n$ 与 $k$ 的关系.

Posted by haifeng on 2011-05-24 22:47:23 last update 0000-00-00 00:00:00 | Edit | Answers (0)

\[ n>\underbrace{\exp(\exp(\cdots \exp}_{k-2}(e)\cdots)). \]