解题方法
1 . 已知函数
的最小值为
.
(1)求实数
的值;
(2)若
,设
且满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8155134413c6104a94ed047e934eeeea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a1007082d08803d3cb9de108039401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d812643e080d4d447fab7fe2ae2646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c3f311c21d1f216d19f0d50b37e858.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27877a392b2c66f618e809674a0fa2db.png)
您最近一年使用:0次
2019-04-03更新
|
364次组卷
|
5卷引用:【市级联考】宁夏银川市2019年高三下学期质量检测文科数学试题
2012·河北唐山·三模
名校
解题方法
2 . 设
.
(1)解不等式
;
(2)若存在实数
满足
,试求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8513986191381fede238a02bc1595b.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d24227741bf427e6bd73490baf3c3d6.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a527fde68b2bbeec4fe524dafff4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-01更新
|
1253次组卷
|
5卷引用:2016届宁夏六盘山高级中学高三五模考试数学(理)试卷
2016届宁夏六盘山高级中学高三五模考试数学(理)试卷宁夏六盘山高级中学2019届高三下学期第二次模拟考试数学(理)试题(已下线)2012届河北省唐山市高三第三次模拟考试文科数学试卷2017届河北衡水中学高三理上学期四调考试数学试卷湖南省桃江县第一中学2019届高三第二次月考数学(理)试题
2012·宁夏银川·一模
3 . 设不等式
的解集是
,
.
(I)试比较
与
的大小;
(II)设
表示数集
的最大数.
,求证:
.
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/b69e1ed3888c4fd89c3142c6cd0c38ea.png)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/5dc35436801d4e60a78c93f2271efd4e.png)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/7ed2bfa892754d9fa7da28e4ab49a600.png)
(I)试比较
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/4d4ab377e9464172a0ab41908fca45a0.png)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/1eb41cf1e4a7447184d407c8f4e0c33e.png)
(II)设
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/f5d773d36e0e4591a604f9fa2d463712.png)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/c0824797c0bb435ab71e52c2c3c043c3.png)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/bc2d8ed8eb224d5f9b54ab596a18475d.png)
![](https://img.xkw.com/dksih/QBM/2012/3/23/1570819475595264/1570819481321472/STEM/ca54f64db66b4ca193ebe3f0f4320700.png)
您最近一年使用:0次
2010·河南开封·一模
名校
解题方法
4 . 选修4—5:不等式选讲
设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb4d847a64c278b0d6baef1c43b6314.png)
(1)画出函数
的图象;
(2)若不等式
恒成立,求实数
的范围.
设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb4d847a64c278b0d6baef1c43b6314.png)
(1)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477229a5675d3dbae9870485420e062e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次