解题方法
1 . 已知函数
.
(Ⅰ)若
不等式
的解集为
,
,求
的取值范围;
(Ⅱ)若
为整数,
,且函数
在
上恰有一个零点,求
的值;
(Ⅲ)在(Ⅱ)的条件下,若函数
对任意的
,有
恒成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282a54e8a2e03b98c0f4124b3a654a9f.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e7581a9b1bdf7e15be780aaaecc4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e9e05a367fc2ea3b2d080187fd7235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6c96b9335c10b51be2968e9e55d3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47acdaa7db189fa7b579edbadaf115d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅲ)在(Ⅱ)的条件下,若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b3c645b0a9ca63c7c4ede23afcad11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3368388525e30cb7179909b03184eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365aff1e875fbea551e10b3c5981ba0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-03更新
|
1465次组卷
|
2卷引用:2014-2015学年江苏教育学院附属高中高三上学期期中理科数学试卷
12-13高二上·福建南平·期末
2 . 已知函数
在(-∞,0)上是减函数,在(0,1)上是增函数,函数
在R上有三个零点,且1是其中一个零点.
(1)求
的值;
(2)求
的取值范围;
(3)设
,且
的解集为(-∞,1),求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b0e4aefa0b2fd39706e8edb5d5a8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1a1611f320c0f358df77aaae3f942.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d23c80f11dcb3f7537c88cbd76a1267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次