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[不等式] 不等式证明

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dahool posted 2018-3-25 13:07 |Read mode
Last edited by dahool 2018-3-25 13:19若$a,b,c\geqslant0$,证明:\[a\sqrt{b^2-bc+c^2}+b\sqrt{a^2-ac+c^2}+c\sqrt{a^2-ab+b^2}\leqslant{a^2+b^2+c^2}\]第一次发帖,公式写了好几遍,哈,求助

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kuing posted 2018-3-25 13:21

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original poster dahool posted 2018-3-25 13:24
回复 2# kuing

十分感谢!

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