已知函数
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71555a0ae3e832daf86819e6a69b9e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2021-08-24 15:11:33
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【知识点】 由导数求函数的最值(不含参)
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