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[函数] 函数的值域

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敬畏数学 posted 2018-10-2 15:18 |Read mode

$ f(x)=\frac{lnx+2}{x} $的值域

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其妙 posted 2018-10-2 18:35

妙不可言，不明其妙，不着一字，各释其妙！

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original poster 敬畏数学 posted 2018-10-8 14:13

Last edited by 敬畏数学 2018-10-17 14:36定义域单调减，即得如图的答案吗？

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original poster 敬畏数学 posted 2018-10-17 14:37

为何为（0，2】？

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睡神 posted 2018-10-17 17:04

回复 3# 敬畏数学

虽然我很菜，但是我真的不懂你在说啥…

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2025-7-15 14:39 GMT+8

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