已知
是自然对数的底数,函数
与
的定义域都是
.
(1)求函数
在点
处的切线方程;
(2)求证:函数
只有一个零点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfb32405d71542f1c87dd58d9d5c4a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7b896474b95cf035d59530216139da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0324fecb070287715e3e8f2322056922.png)
更新时间:2019-04-13 10:52:36
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解答题-问答题
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名校
【推荐1】已知函数
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(2)若函数
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(2)若函数
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【推荐2】已知函数
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
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(2)若函数
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解题方法
【推荐1】已知函数
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(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8862f18f5926d0d9ee5b896849bb36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf60c5e8996d138198fe74f30ce520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eca5c282908fef3f0481e376f42c490.png)
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较难
(0.4)
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【推荐2】已知函数
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(1)求
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(2)当
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较难
(0.4)
【推荐3】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40ab948e5df77b57035f6b2717700858.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e3edee03f89f5dfaf81d63942e2939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c731c22ac3c75a23d8c4a6646e5d4e1.png)
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991c11db9e8b6932283b12b0c739d381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
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①证明:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
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②设
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6073fc52cd10164c1313dd96069b8d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e5ec6cf20a8eb8fe361ea2440db276.png)
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解答题-问答题
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较难
(0.4)
【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209df00e89f8fe0accbf201ccfa10143.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
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