解题方法
1 . 在R上定义运算
,若关于x的不等式
的解集是集合
的子集,则实数a的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df318ced3439cea07b8a3b8468819c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7b73f65799e1d7069173ebaf574dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e2e95bbdb8dd93dd603b39b1e33103.png)
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2020-06-25更新
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218次组卷
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3卷引用:沪教版(上海) 高一第一学期 新高考辅导与训练 第2章 不等式 本章复习题
沪教版(上海) 高一第一学期 新高考辅导与训练 第2章 不等式 本章复习题上海市香山中学2022-2023学年高一上学期期中数学试题(已下线)第二章 等式与不等式(易错必刷30题8种题型专项训练)-【满分全攻略】(沪教版2020必修第一册)
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2 . 不等式
的解集为A,集合
,若
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c01c1b65bd70bc47b3a7adfa576a0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0579135823e3b67adf95c22f57aa3e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知不等式
的解集是A,不等式
的解集是B.
(1)当
时,求
;
(2)如果
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdeab70612dd59acc00620c59931aa91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6906b1ec8968b95173940ee40f6ffdd9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
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解题方法
4 . 已知不等式
的解集为
,关于
的不等式
的解集为
.
(1)若
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea054e8cd92fbf23d0d51ffc5a98d67a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970c24f1a82bdceb131be7c171f2face.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
5 . 设不等式
的解集为
, 关于
的不等式
(
为常数)的解集为
, 若
,则
的取值范围是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57032c1466f18d9750637c3a00f6a316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8299782307909d80180b90a0f06e8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 已知二次函数
的定义域
恰是不等式
的解集,其值域为
,函数
的定义域为
,值域为
.
(1)求
定义域
和值域
;
(2)试用单调性的定义法解决问题:若存在实数
,使得函数
在
上单调递减,
上单调递增,求实数
的取值范围并用
表示
;
(3)是否存在实数
,使
成立?若存在,求实数
的取值范围,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dc1d4dfe9b98c934cb60526c8e36074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaeb4dd94c30a0599a8ae132976af64d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2966faea2bdf17a1c9312873cfda0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
(2)试用单调性的定义法解决问题:若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56988dfa7e8a5ee6d943dc9c9d93006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2966faea2bdf17a1c9312873cfda0fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf93b65e769d840720e01769685740a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660c5ba1a2501c7e16b5357e1e850400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2019-12-04更新
|
485次组卷
|
3卷引用:上海市七宝中学2018-2019学年高三上学期第一次月考(10月份)数学试题
7 . 已知函数
的定义域为集合A,关于x的不等式
的解集为集合B.
(1)求集合A和集合B;
(2)若
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2623e87a2377dddc95d545a12f0f27c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84be865ec8f41e9c1cd5dccc9c15570.png)
(1)求集合A和集合B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
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2019-11-30更新
|
290次组卷
|
2卷引用:辽宁省六校协作体2019-2020学年高一上学期期中数学试题
名校
8 . 已知不等式
的解集为
,集合
.
(1)求
的值
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f70e8b92562e533fc249836020fa873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/387ed93ab3417919d161036f678136ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcf044b3d46f8a58954d1fcb862ff4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72850427e83ff19a24305783e080b280.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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解题方法
9 . 设集合
为关于
的不等式
的解集,集合
为关于
的不等式
的解集.
(1)求集合
;
(2)若集合
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e47686a0f7a8755dec86fb8bc803a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f04377938ef4c0741dc3e3afe61dd9.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 记关于
的不等式
的解集为
,不等式
的解集为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)若
,求
;
(2)若
,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b1fa84385e87a5cf9d925103bc98d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c111a03a88d0635659cc3fb347c09d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1baa634adb05b27164ef44a272cda31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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