1 . 已知函数
.
(1)设
,求方程
的根;
(2)当
时,若对于任意
,不等式
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3b40144938746d7a7d599e9e48e2d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11417f238b8851b0959a88bd6ad31b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a73db674d29eae8f8921eff5944983.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f704cad5b9ae1812db6aca6f02d839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc075a653cd5561702a97d50ee1d694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
2 . 设
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54763776cf1e1a8b50f86d256ee031a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a36d5069b1f523774875b8830d96d28e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98734a4e3554bcfbb007a9c18c30b148.png)
A.2 | B.![]() | C.1 | D.![]() |
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