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解题方法
1 . 已知函数
.
(1)若曲线
在
处的切线与
轴垂直,求
的最大值;
(2)若对任意
,都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9beb14fd0fc3d49f3a81a5922a6407.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f55067bde7ee48e58c6f63fd80e8e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef1ede603a8c5a4246ca7f2adb7ba10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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