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[不等式] 求助一道可能简单的不等式

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ZhuYue286 posted 2024-5-5 04:54 |Read mode

已知 $a,b,c\geqslant 0$，证明：
\[\sum_{cyc}{\frac{a^2-bc}{2a^2+b^2+c^2}}\geqslant 0\]

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kuing posted 2024-5-5 05:03

zhihu.com/question/441072242/answer/1696748778

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original poster ZhuYue286 posted 2024-5-5 05:13

kuing 发表于 2024-5-5 05:03
https://www.zhihu.com/question/441072242/answer/1696748778

感谢

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