已知函数
.
(Ⅰ)当
时,解不等式
;
(Ⅱ)若存在
满足
,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572982526631936/1572982532177920/STEM/7acb147fb52d479f887f2530fbef155b.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572982526631936/1572982532177920/STEM/41ccda6d1daa475c982c4fcabd9570f2.png)
(Ⅱ)若存在
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572982526631936/1572982532177920/STEM/2f95304b5f624dd5a5d94e80ea200c51.png)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572982526631936/1572982532177920/STEM/01e671f688074338998bc25baabac7f2.png)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572982526631936/1572982532177920/STEM/7661789685c348cbadd3aa95a3c7b821.png)
更新时间:2016-08-17 14:16:26
|
【知识点】 绝对值不等式
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知函数
的图象过点
.
(1)若关于
的方程
在
有实根,求实数
的取值范围;
(2)若函数
,则是否存在实数
,对任意的
,存在
,使
成立?若存在,求出
的取值范围,若不存在,请说明理由
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613572edb9e8c1e60f609a19e27362ea.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b4874cf36b6082ba4d539ff3ee69a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ec9c83a66e586d3601b1f1440ebb5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4474bd96f620ebf3759b36cb6a1251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c7f93185d5e8863c8977d3aafe9c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f64b6734d1f62550d9864c0ba7f1c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c96d62bb7eb9d3a4738717a9005d261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
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解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐2】已知定义在
上的函数
满足:①对任意实数
,
,都有
;②对任意
,都有
.
(1)求
,并证明
是
上的单调增函数;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776a44d34b910f5307ea3cbc6e2b12aa.png)
对
恒成立,求实数
的取值范围;
(3)已知
,方程
有三个根
,若
,求实数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c38a21483a2dc328d2e0b1d1b62599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38fffbc7ab9882480f4faa72390e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776a44d34b910f5307ea3cbc6e2b12aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda3e59af60f5b0dfc4e177a47ea46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293a8e9c4481437560aeec5ced9220e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048bc2a7239539fcad04fc7934fa2834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1037287a6d8a9a7766734077faa87b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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