已知函数
.
(1)证明:当
时,
恒成立;
(2)若函数
在R上只有一个零点,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97c5230495e1744679872fd2cfa9397.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588e4f3d71158c22156afc4c4e0cad58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e68d79b5365b5a5bcff04672581951.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f79c81cbad87b98161cdc6c6e6ac468.png)
18-19高二上·山西长治·期末 查看更多[5]
更新时间:2019-02-01 09:30:17
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(1)若
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42797bffdf375705c3d7d5c79ee5b729.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
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(2)求函数
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【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8806090511a3509057c022bd7160cc0.png)
(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
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(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d379d4116c002d41e2e703ac425e995e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455fe3127c5130ae5f66e42a7cc79d6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90bbf9f4cf7b4bb30b5280eb664e646.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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(2)若函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
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(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37d6ef4fb180372f0fe8fccef47ff05.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44dcc1ff9e07b546efc65ac3b1f924bd.png)
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(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/999a81401457dcebb32b961e83f3b55c.png)
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(3)在(2)的条件下,若导函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720c16ff497902c3eaa35fff95c8438a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
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