已知函数
,e为自然对数的底数.
(1)证明:
;
(2)若
恒成立,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5020bb4ea60b44d0da622faa6c5e3ff.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976121b4d2ff0dcefd59751f2cdbac53.png)
更新时间:2023-10-15 13:58:27
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