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[不等式] 三元恒成立求参数

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力工 posted 2021-5-25 07:54 |Read mode
若对任意的满足$xyz=a$的正数$x,y,z$都有
$\frac{x}{y}+\frac{y}{z}+\frac{z}{x}>\frac{1}{x}+\frac{1}{y}+\frac{1}{z}-1996$,
求$a$的取值范围。

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kuing posted 2021-5-25 14:34
用这帖 forum.php?mod=viewthread&tid=7848 的方法即可

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original poster 力工 posted 2021-5-25 15:28
回复 2# kuing
谢谢酷哥大神,我学习到的做法太繁琐了。

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