已知函数
.
(1)设
是
的极值点,求
,并讨论
的单调性;
(2)若
,证明
有且仅有两个不同的零点.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9716bde016edb12c3c3ebea2cb0d4eb.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59215546be7be4498f17b1e9b9ec0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc2ec1e980a2c2ab5791a1a66dd88ff.png)
更新时间:2020-03-17 08:06:14
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适中
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解题方法
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名校
【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f9bd7fdb0c44b5e2e1d5a59dd6f7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96b8f760bc732836c28761d8636ae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd5ba50733980a9d847e047c77861d7.png)
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