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解题方法
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511b5e2d1629ade61c3be1a881f7b8a7.png)
,
(1)当
时,求
在区间
上最大值和最小值;
(2)如果方程
有三个不相等的实数解
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511b5e2d1629ade61c3be1a881f7b8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e5ff2705eb737adef9a6dc70559d79.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f409d09ee4c68dd167d9dc62dd58a4.png)
(2)如果方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52079d948ae0e1f1d112b3ac76142f1a.png)
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