已知函数
.
(1)设
是
的极值点,求
的值,并求
的单调区间;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca9c96c86bf08062a566e820d0c627f.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5709a32193307cee2abfc7b6133873c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
更新时间:2021-03-12 13:16:20
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【推荐1】已知函数
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(1)当
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29f444db402303c7a0b67abfa0a8332.png)
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
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(3)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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适中
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(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
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