已知函数
.
(1)设
,求方程
的根;
(2)当
时,若对于任意
,不等式
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3b40144938746d7a7d599e9e48e2d.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11417f238b8851b0959a88bd6ad31b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a73db674d29eae8f8921eff5944983.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f704cad5b9ae1812db6aca6f02d839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc075a653cd5561702a97d50ee1d694.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2017-07-05 18:23:50
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【推荐1】已知函数
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【推荐2】已知函数
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(2)用单调性的定义证明
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【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246de316aacce5e2a1b482840ff02f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b73a49c229b947772609e5bc4cf8db.png)
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(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4907ee836cde255caab4b513a40c15f1.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3508b120d891dedb90901792bfeefa31.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed66c7a369e21586517eb6c7efc260d.png)
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解题方法
【推荐1】已知函数
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d393131f1278e5a927af6fdc2da5f29f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐3】如图,在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c4eaa1e5dd08305162415799a063d7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407e4330cfdd5cd0bcfd4f3bd1a898e6.png)
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