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1 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2c7e0401286245c40046a8fc00f577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b53505513969bb463221d0310d205a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 设
为实数集
的非空子集.若对任意
,
,都有
,
,
,则称
为封闭集.下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c8b2714e2f6ddfdd6b05d3b4de1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434e264cfde405b4dadf6cdeaf9a6a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.自然数集![]() |
B.整数集![]() |
C.集合![]() ![]() |
D.若![]() ![]() ![]() |
E.若![]() ![]() |
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3 . 下面表示同一个集合的是( )
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
E.![]() ![]() |
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4 . 设集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e931c89ec83170a04ffae772cfd7eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541581602a289d3005cb7ad88260ccda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知全集
,设集合
,集合
,
(1)当
时,求
;
(2)若集合
只有一个元素,求
的值;
(3)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f7ea6f2d639c3781ac1130b2992b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5311072d77862595a4488a7451721c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c79d05bec9596dfc5c8c017efd6d455.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 用列举法表示集合
是_____________________ ;用描述法表示“所有被4除余1的整数组成的集合”是_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53d801688c6bad0fa295b5398514e07.png)
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7 . 设集合
,若
,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab31ef4c923d010361ae08da546be38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a347e53d69e6279105061e656d2f5bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-12-29更新
|
308次组卷
|
3卷引用:海南省海口市第四中学2019-2020学年高一上学期第一次月考数学试题
名校
8 . 设
是平行四边形},
{
是邻边相等的四边形},则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2850a3df4656afc565904fe191746d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f7ab83c2c0bbcaabc2a177855d55d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9b51c8cafc32468035b658a22b0d5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
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9 . 已知函数
.
![](https://img.xkw.com/dksih/QBM/2019/11/9/2330300665757696/2364997806841856/STEM/4902c3c2a8db40269008aee424da5b56.png?resizew=187)
(1)求
;
(2)在直角坐标系中画出
的图象;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844f6833faa3a5f8aef195727b77e4da.png)
![](https://img.xkw.com/dksih/QBM/2019/11/9/2330300665757696/2364997806841856/STEM/4902c3c2a8db40269008aee424da5b56.png?resizew=187)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9799b602b8481068315eef74c72b8e19.png)
(2)在直角坐标系中画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ff9ca56355a6e830e21e0e9def545e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-12-28更新
|
260次组卷
|
2卷引用:海南省海口市第四中学2019-2020学年高一上学期期中数学试题
名校
10 . 已知函数
(
,
)在
时取得最小值,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325cd3e57465c5cc93f068c94c2b8f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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