已知函数
,若存在唯一的整数
,使得
,则a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f9432179ef74f194f3e3ebde33e69a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d291924fda9f1007e02ad5d0e657d23e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2022-02-11 12:43:19
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【知识点】 利用导数研究能成立问题
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【推荐1】已知函数
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【推荐2】当
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