已知函数
.
(1)当
时,判断函数
的单调性;
(2)证明函数
存在最小值
,并求出函数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433f959c2074de7a5a4e3a463d783fda.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
2022·河南·模拟预测 查看更多[3]
更新时间:2022-03-09 18:48:24
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(1)若
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(1)求
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