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[不等式] 三元函数最值

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aishuxue Posted 2017-5-17 10:36 |Read mode
已知$a,b,c$均为非负实数,且$a+b+c=1$,求$a^2b+b^2c+c^2a$的最小值。

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kuing Posted 2017-5-17 11:30
已知$a,b,c$均为非负实数,且$a+b+c=1$,求$a^2b+b^2c+c^2a$的最小值。
aishuxue 发表于 2017-5-17 10:36
最小值?这还用问吗,显然是0啊,当 (a,b,c)=(0,0,1) 时

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 Author| aishuxue Posted 2017-5-17 12:09
不好意思是求其最大值。

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kuing Posted 2017-5-17 12:13
回复 3# aishuxue

那看这个帖就好了 forum.php?mod=viewthread&tid=281

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