1 . 【选修
:不等式选讲】
已知
.
(1)当
,解关于
的不等式
;
(2)当
时恒有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58c4ab4b9e8a2d3867554364713b999.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b31e60f49897fbd5412f52a37f9c368.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0219fc614c97450260097d8bf03051f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08b810a874c096f35574e5f865aa6cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efe6ed0d1b12262d3d225437346ae91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-05-02更新
|
310次组卷
|
4卷引用:2016届陕西省高三高考全真模拟(五)考试数学(理)试卷
2010·吉林·模拟预测
2 . 关于
的不等式
.(Ⅰ)当
时,解此不等式;
(Ⅱ)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/98de3a6f6ecde4e01a1a280f8467d76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
(Ⅱ)设函数
![](https://img.xkw.com/dksih/QBM/2012/3/6/1570789981249536/1570789987008512/STEM/a2a2e1470c4d40c68228a7686da8be97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2012/3/6/1570789981249536/1570789987008512/STEM/3ec2cd9a40f444c49b249701da58c1cb.png)
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3 . 已知函数![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490249216/STEM/f84adeb69ab4407191c9eaa8189de5f1.png)
(1)解关于
的不等式
;
(2)若
的解集非空,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490249216/STEM/f84adeb69ab4407191c9eaa8189de5f1.png)
(1)解关于
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490249216/STEM/01a7bea2ba954cbd93f4df0171cfe65f.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490249216/STEM/ecf1bf7d6405424b86be4c8fcc8df124.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490249216/STEM/9d573282e62e4d27abb1cd75d9df6187.png)
![](https://img.xkw.com/dksih/QBM/2015/9/16/1572234484342784/1572234490249216/STEM/5bd933ed30a34a528556a456a39a84a4.png)
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2016-12-03更新
|
804次组卷
|
2卷引用:2014-2015学年河北唐山一中高二下学期期末理科数学试卷
10-11高二下·海南·期末
4 . 设
,解关于
的不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364d18c7009e307b1bea2e365d598ece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0b5cb2e6d6945d7f702d098b604b17.png)
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2011·山西忻州·一模
名校
5 . (Ⅰ)解关于x的不等式
;
(Ⅱ)若关于
的不等式
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb079f4083bce8996c4fe50683eb70b6.png)
(Ⅱ)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336a3bcf6d32663ca13da0d9b51e6520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
6 . (1)解不等式
;
(2)若不等式
的解集为
,
,求
的取值范围,并求
的值;
(3)若关于
的不等式
的解集
中恰有5个不同的整数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f51c0e0b7b42c8a2ec0749fe18a6f99.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29714ba3a3271aa861087d82677c87a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6119839211a465f62c5ba0aeed0af21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060e10284dd3f903752eb17c8e6382f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2263769a401cc0be4b25a4e7856b05.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b80f37310557463cfad15788af16f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
7 . 已知函数
.
(1)解不等式
;
(2)当
时,不等式
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed397292ea9594f3dd1ced720fbd763.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b562ca77fa64f3ebe40e0ad49833d5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd970f32e5968917123557bedb0716f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074322fcac39d45c9a930c854cc04f63.png)
您最近一年使用:0次
2020-04-02更新
|
174次组卷
|
2卷引用:2020届湖南省株洲市高三一模数学(文)试题
名校
8 . 已知
.
(1)解不等式
;
(2)若存在
,使不等式
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc820f7d85bbe9c57d6eaed1b471c5f.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4c3872583bef56de103e4a4df05838.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c7f851b964af7d64b350eb5d589592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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9 . 已知
,函数
.
(1)当
时,解不等式
;
(2)若对
,不等式
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a2d7c67748749a033294d20ec56360.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afd2ab66f83a0d2fecda892d06e2e7a.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363976a980d8bdd2e6ed37511689009b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ebabb00d2010a32bd0b296696d4176.png)
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