名校
1 . 已知函数
.
(1)求
的单调递增区间;
(2)当
时,关于
的方程
恰有三个不同的实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be28f2d051d647edaee7697dc82f5e83.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd863f4329de75462506c99463cc1488.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3c9f814c640d3e196c01c3cb81723e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-07-23更新
|
4250次组卷
|
8卷引用:陕西省西安市莲湖区2019-2020学年高一下学期期末考试数学试题
名校
解题方法
2 . 对于函数
,
与常数
,若存在
使得
成立,则称函数
与
是“
靠近函数”.
(1)设函数
,
,判断
与
是否为“1靠近函数”,并说明理由;
(2)若函数
与
为“1靠近函数”,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea10ff765f87d9379cf875e8d425df23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e29815099a20aefdf055c71a347dbb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2f0102d111a1e63ec471da49dbd50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90ba0d6fefae76fcdd43507c4b07b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bba0decfa88c92d9fd153aa2b84388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-14更新
|
1350次组卷
|
2卷引用:重庆市南开中学2017-2018学年高一上学期期末数学试题
名校
3 . 已知定义在
的奇函数
满足:①
;②对任意
均有
;③对任意
,均有
.
(1)求
的值;
(2)利用定义法证明
在
上单调递减;
(3)若对任意
,恒有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/528597e52afcd661e2aaca97e709ca29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ed85d47b4f488a9b5e211938cc5424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28f616b1f56991ee75caae3ac35208b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d8f51aac18216cabd2b0082dca6090.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d55ef0d1b7ea88d92fd6e1ecebb5f5.png)
(2)利用定义法证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf97da45123318474a22828c99d45d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4864f1ffd5317f2f89c90ffc91ece407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2020-01-30更新
|
1909次组卷
|
2卷引用:重庆市第一中学2019-2020学年高一上学期期末数学试题