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[函数] 无理二次根式函数之和的最大值

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敬畏数学 posted 2017-12-16 15:46 |Read mode
函数$f(x)=\sqrt{x^2-x^4}+\sqrt{2x^2-x^4}$的最大值?

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kuing posted 2017-12-16 15:51
在《撸题集》搜索瞬间搜到啊,见第 179 页题目 2.1.32.

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original poster 敬畏数学 posted 2017-12-16 16:25
嗯,CS简单。待定系数的那几个系数有点难阿。

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