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[不等式] 不等式 真让人爱恨交加

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facebooker posted 2019-8-7 00:22 |Read mode
$x,y,z∈R^+,x+y+z=3,pro:\frac{x}{x^3+y^2+z}+\frac{y}{y^3+z^2+x}+\frac{z}{z^3+x^2+y}\leqslant 1$

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色k posted 2019-8-7 00:28
forum.php?mod=viewthread&tid=595 的 2# 及 14#(后者证得简洁些)

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original poster facebooker posted 2019-8-7 01:22
回复 2# 色k

谢谢 真的学到了。

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