1 . 已知不等式
的解集为
.
(1)求集合
;
(2)若
,
,
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4538b99f20d9fbbe4f22bdb63aa90e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d55a324f925c9e5a419dfcdb9759af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ac55513f89d46a143e217445c42f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db2eb29042782efa4f96d82e6aa35d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f99cb105ad411975e9c004da9456712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2016-12-04更新
|
311次组卷
|
4卷引用:2016届甘肃省河西五市部分普通高中高三第一次联考理科数学试卷1
2 . 设函数
.
(1)当
时,解不等式
;
(2)若
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e1349af412fd86b3b9c8d1cfa18b27.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6184bd8ae151fb21f46289fdc098d1b.png)
您最近一年使用:0次
2017-08-17更新
|
25次组卷
|
2卷引用:甘肃省肃南县第一中学2016-2017学年高二下学期期末考试文数试题
名校
3 . 选修4-5:不等式选讲
设对于任意实数
,不等式
恒成立.
(Ⅰ)求实数
的取值范围;
(Ⅱ)当
取最大值时,解关于
的不等式:
.
设对于任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd10cf263c001a282ad92858c3cb4b9.png)
(Ⅰ)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede36f6fbd6b92bfaa6e6428790e23f8.png)
您最近一年使用:0次