关于
的不等式
.
(1)当
时,解此不等式;
(2)设函数
,当
为何值时,
恒成立?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9353bf2133efc153dac3c011d3e4518d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7db532a6825fb1adeceff64f1dab345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73527c4ecc77409a28ca0adf5fcbc75.png)
更新时间:2016-12-04 08:03:32
|
【知识点】 求绝对值不等式中参数值或范围解读
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解答题-问答题
|
适中
(0.65)
【推荐1】选修4-5:不等式选讲
已知函数
.
(1)解关于
的不等式
;
(2)若不等式
对任意的
恒成立,求
的取值范围.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824816098a37b2b58f39bdf7a0fb75ea.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f3cb26e77f523f3eb0ef483701f3e06.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c95d0a9384e55103eae330396de544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐2】已知函数
的最小值为
.
(1)求
的值;
(2)若
为正实数,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4acc18110de9b954f026868627ef46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de86db8a10ca4e4cd7e3f3d48aa865d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f917a19a15bceb9a3769e59e25dd9c.png)
您最近一年使用:0次