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[不等式] 不等式求證

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231908 posted 2018-8-24 20:53 |Read mode
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original poster 231908 posted 2018-8-28 18:53
頂一下

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青青子衿 posted 2018-8-28 23:12
回复 1# 231908
\(a^2+b^2+c^2=3\)\(\quad\quad\,a,b,c>0\)
\[ \frac{a^2+3b^2}{a+3b}+\frac{b^2+3c^2}{b+3c}+\frac{c^2+3a^2}{c+3a}\ge3 \]
你可以看看这个:
artofproblemsolving.com/community/c6h1221917

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