1 . 已知函数
.
(1)若
是实数集
上的奇函数,求
的值;
(2)用定义证明
在实数集
上的单调递增;
(3)若
的值域为
,且[
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde45f3076577fe5c20d1211fde61e10.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0919f2f5142797b855ae7582eafcd03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
2 . 已知函数
的定义域为集合
,集合
,且
.
(1)求实数
的取值范围;
(2)求证:函数
是奇函数但不是偶函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71397b8b023e2e14b422b2e5b00107c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1c7c163db0098f25a54e3dc9ce2e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2017-12-27更新
|
1104次组卷
|
11卷引用:2017-2018上海市杨浦区高三数学一模试卷
2017-2018上海市杨浦区高三数学一模试卷(已下线)2019年一轮复习讲练测 2.3 函数的奇偶性与周期性【浙江版】【测】【全国百强校】安徽省安庆第一中学2018-2019学年高一(上)期中数学试题云南省曲靖市会泽县一中2019-2020学年高一上学期第一次段考数学试题安徽省滁州市定远县育才学校2020-2021学年高三上学期第一次月考数学(文)试题上海市杨浦区2020-2021学年高一上学期期末教学质量检测数学试题上海市格致中学2021-2022学年高一上学期12月月考数学试题上海交通大学附属中学2021-2022学年高一上学期期末数学试题上海市文来高中2022-2023学年高一上学期12月阶段测试数学试题(已下线)期末真题必刷常考60题(22个考点专练)-【满分全攻略】(沪教版2020必修第一册)上海市长宁区复旦中学2023-2024学年高一上学期12月月考数学试题
解题方法
3 . 已知函数
有如下性质:如果常数
,那么该函数在
上是减函数,在
上是增函数.
(1)用函数单调性定义来证明
上的单调性;
(2)已知
,
,求函数
的值域;
(3)对于(2)中的函数
和函数
,若对任意
,总存在
,使得
成立,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5e228803048cbc40f6aa7141d3a80d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff618b9a8dfc677e2f6782ab989d14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0081a9f76b3e3d4c697c3c12f7c5724c.png)
(1)用函数单调性定义来证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2f354a7729d5201ab4ee077dd8b132.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c308a5e4c248c57857ed588dcec62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)对于(2)中的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663dca450c57095e177444db30e4b571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5d499666f20047af33ad30482efd37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07444159fdea87a306d2ea12cd6f027c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2618ce4371cad6e470a3942f98b1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
4 . 已知函数
.
(1)若
是实数集R上的奇函数,求
的值;
(2)用定义证明
在实数集R上单调递增;
(3)若
值域为
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1401ecd9908dd7ad458f578063f67044.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)用定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a852b3e2a547d27326408b9bd39f5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
5 . 已知函数![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/5bf0815f21fc43c38493f9d1f158638a.png)
.
(Ⅰ)关于x的不等式
的解集为
,且
,求a的取值范围;
(Ⅱ)是否存在实数
,使得当
时,
成立.若存在给出证明,若不存在说明理由.
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/5bf0815f21fc43c38493f9d1f158638a.png)
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/f39445e99834499eb6a37105a76a1c97.png)
(Ⅰ)关于x的不等式
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/3402e372bea741da904b4866e1204bd9.png)
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/d9c14691af944974a915d8ef3e1d3ac8.png)
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/8bed9491535c405eb4f0d76084c9fabe.png)
(Ⅱ)是否存在实数
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/4e9b742c818e4f1bbf3c23d29ed870c0.png)
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/714b6dd65ef646e2bec0b2cd931f595a.png)
![](https://img.xkw.com/dksih/QBM/2016/12/11/1579117025320960/1579117025894400/STEM/339857eab64a49b9992333d2559ac908.png)
您最近一年使用:0次