1 . 不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f444d17cd7da594f6b4166c28857df8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 下列结论正确的有( )
A.不等式![]() ![]() |
B.函数![]() |
C.若方程![]() ![]() |
D.设a,b,c为实数,不等式![]() ![]() ![]() |
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3 . 已知不等式
.
(1)当
时,求此不等式的解集;
(2)若不等式的解集非空,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938fdf5069072c04887961cab4052813.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7300838ad476bc1c75c1cca1fc9880cf.png)
(2)若不等式的解集非空,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2018-08-25更新
|
1088次组卷
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8卷引用:【市级联考】湖南省张家界市2017-2018学年期末联考数学(B卷)试题
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4 . 设全集
,集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5ef2eaf86b09873cd5ff7811849597.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ee431a4d50c0cdd22400f45646e6c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63601b7f90a6c1b6cc444ca30d3b705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5ef2eaf86b09873cd5ff7811849597.png)
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5 . 已知
,
,
有意义,
关于
的不等式
.
(1)若
是真命题,求
的取值范围;
(2)若
是
的必要不充分条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e1422d7e6715b9009e2156a8437415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f22280276e63880ee49894d8ddf593.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-04-05更新
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2卷引用:山东省沂水县第二中学2019-2020学年高二上学期第一次教学质量检测数学试题
6 . 解下列不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8163ef3df845ca71b15a0ac4a361e66a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870fa99935571ec1b71d8d9cb771716e.png)
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解题方法
7 . 设集合
,
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e754106a7581c301955776c4666cc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5992c4ae7dca2553e14c24c9bd8693f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a3375139541ed61929fa658f16bb7d.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() |
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2020-12-29更新
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3卷引用:百师联盟2021届高三一轮复习联考(三)全国卷I理科数学试题
8 . 已知集合
,
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46492bd8cc29319940dc7cbd0f7fbb50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419f3fc2d03eb71cfb15f711d77bbe7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-04-13更新
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860次组卷
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4卷引用:【市级联考】黑龙江省齐齐哈尔市2019届高三第二次模拟考试数学(理)试题
【市级联考】黑龙江省齐齐哈尔市2019届高三第二次模拟考试数学(理)试题(已下线)专题7.1 不等式的性质及一元二次不等式(练)【文】-《2020年高考一轮复习讲练测》(已下线)专题7.1 不等式的性质及一元二次不等式(练)-江苏版《2020年高考一轮复习讲练测》2020届山西省大同四中联盟体高三3月模拟考试数学(理)试题
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解题方法
9 . 已知集合
,
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d3dd66ef639afb5a5a6eb45b2e3f023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac311dcd0e81e8ae14fa2ed60a44f927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-05-13更新
|
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4卷引用:2020届江西省九江市高三二模理科数学试题
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10 . 已知
,
,
.
(1)求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0b72ad98be2828a4b66037abb258b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b619e458151dc29ccb3178139f5d2ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c68db0c695d9c91cca7bb024ecbc61.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22882310035db6d3d953e060b0c91733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-11-20更新
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729次组卷
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3卷引用:贵州省黔西南布依族苗族自治州兴义市第八中学2019-2020学年高一上学期期中数学试题