设函数
,已知
在
上有且仅有3个极值点,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11531d406e24da8f7f179c6bbd273596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71163f419555f2ed76075c8ff659fbfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
更新时间:2022-11-23 15:13:15
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