(1)证明:当
时,
.
(2)已知函数
,试讨论
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a826be8b4ae117a60c2c022b49db87b7.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f6dc03448b0475dca25aad3e87f28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2023-12-20 21:40:07
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