选修4-5:不等式选讲
已知函数
.
(1)求不等式
的解集
;
(2)设
,证明:
.
已知函数
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/0e0392e6f07d4090b382fa1459f95b8e.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2a2dd94126c7f2e99b03e3ac30ba6c.png)
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/cf395b79493142a69e359cb880a07ed4.png)
(2)设
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/729894d06dc2446892f05262e9704e18.png)
![](https://img.xkw.com/dksih/QBM/2016/11/18/1579005511172096/1579005511884800/STEM/22af9dfb04f04ea2a81def48ca0cb159.png)
更新时间:2016-12-13 07:17:50
|
【知识点】 绝对值不等式
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】解不等式:
(1)
;
(2)
;
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0134d5ecd48c3ff15cb8b14f1995f11f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d95e6b2f863987347d46c52a332887.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】
(
),
.
(1)证明
;
(2)若不等式
对
恒成立,求实数b的最大值,
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ae05506fffbd7f32e0dc53cddd281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafa7a492b1c919124f22456f28c00db.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a97b66e348ff02fc9e7f610d7dfeda5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
您最近一年使用:0次