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[不等式] 这个不等式是用反证法吗？

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guanmo1 posted 2016-1-4 22:26 |Read mode

不等式1.JPG

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kuing posted 2016-1-4 23:32

回复 1# guanmo1

原题用反证法较简单，见 bbs.pep.com.cn/forum.php?mod=redirect&got … 2328&pid=3934184 （第1084楼）

用加权均值直接证可以证出加强式，见《撸题集》第488页题目 4.6.64.

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original poster guanmo1 posted 2016-1-5 15:13

回复 2# kuing

谢谢

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