设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
(1)解不等式
;
(2)若对
有
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3480ec1f8b3e1c15d4479cc8ba05f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bf0995f32a13d0a9e423f3e88ab271.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33da1e0c25608633c379cf2c724fda5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2017-11-07 00:13:52
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解题方法
【推荐1】已知函数
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(2)若
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【推荐2】已知函数
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(1)求不等式
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(2)若不等式
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【推荐1】已知函数
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(1)当
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(2)已知
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【推荐2】已知函数
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(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6258b8881e88860b037697eae1e2989.png)
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【推荐1】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5a4af1eb3bf0551a8b28c2ba74db24.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0aa9d781436ea046ee072ca8482f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b45690690184958a361902a58357e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff2ec083c5bc13e01100464f3c31028e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66edbe4e1f5d213e3026c81c17ef113d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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(2)若存在
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【推荐3】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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