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[不等式] 根式不等式

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flvbin Posted 2025-1-24 16:41 |Read mode
已知:a,b,c>0,且满足a+b+c+abc=4,证明:
$ \frac{1}{\sqrt{a+b+7c}}+\frac{1}{\sqrt{b+c+7a}} +\frac{1}{\sqrt{c+a+7b}}\geqslant 1$

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2025-6-5 19:54 GMT+8

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