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[不等式] “臆断”的一个不等式

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史嘉 Posted 2013-12-7 16:08 |Read mode
Last edited by hbghlyj 2025-4-23 12:38若 $0<a_1 \leqslant a_2 \leqslant \cdots \leqslant a_n, n \in \mathbf{N}, n \geqslant 3$,则 $\frac{a_2}{a_1}+\frac{a_3}{a_2}+\cdots+\frac{a_n}{a_{n-1}}+\frac{a_1}{a_n} \leqslant \frac{a_1}{a_2}+\frac{a_2}{a_3}+\cdots+\frac{a_{n-1}}{a_n}+\frac{a_n}{a_1}$.

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kuing Posted 2013-12-7 16:17
见《数学空间》2011年第4期(总第4期)P9

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 Author| 史嘉 Posted 2013-12-7 16:21
回复 3# kuing

记忆力惊人呀,看看去。

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kuing Posted 2013-12-7 16:22
回复 4# 史嘉

我自己写的当然记得啊。

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其妙 Posted 2013-12-7 17:07
回复  kuing

记忆力惊人呀,看看去。
史嘉 发表于 2013-12-7 16:21
说明还年轻,

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