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[不等式] 转发：人教网的一道条件最值问题

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敬畏数学 posted 2015-11-12 20:55 |Read mode

对正实数x,y，且xy-2y-x=2，求x^2+y^2的最小值

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色k posted 2015-11-12 22:21

bbs.pep.com.cn/forum.php?mod=viewthread&tid=3135400
原帖已经说了啊

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original poster 敬畏数学 posted 2015-11-13 07:57

可以转化为：g(t)=16/t+16/t^2+t^2+2t+5(t>1)的最小值。下面再下去请高手继续。

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色k posted 2015-11-13 10:27

扔！掉！

这名字我喜欢

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