解题方法
1 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb2f64356f0dd3e42da768d55b7f051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3914b448fba403bb36225ddbb6f3ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c42eff44b9d88af44a0f5f22e821e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 设
是有序实数对构成的非空集,
是实数集,如果对于集合
中的任意一个有序实数对
,按照某种确定的关系
,在
中都有唯一确定的数
和它对应,那么就称
为从集合
到集合
的一个二元函数,记作
,其中
称为二元函数
的定义域.
(1)已知
,若
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caffbfc9977e73b4b415dc06919d73ff.png)
(2)非零向量
,若对任意的
,记
,都有
,则称
在
上沿
方向单调递增.已知
.请问
在
上沿向量
方向单调递增吗?为什么?
(3)设二元函数
的定义域为
,如果存在实数
满足:
①
,都有
,②
,使得
.
那么,我们称
是二元函数
的最小值.求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9aa1d34d66a6876aa0566c8fc8b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a662f934b3bf3ad6f1f1414fedb381d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736cfed1637094686ac62b5a6708c0a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759373c1c91098c91971bd1f8b3fc474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6d715b78791241301d4e9a84dbd11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caffbfc9977e73b4b415dc06919d73ff.png)
(2)非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ad5bd40102ca3d9dbfce5c14f9fe9e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a0ad0bc4ad4febf9dc2a5d6d2304c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860fc1db2edc066188f8d24e35dbf205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afb8db9bf6d41d4fbe0decda17cd478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4733a43364bdf78f59757c8f8c3fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8ed37c1a0692baa8d20cc74bd96ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2ebca1ff25fe9a26ef068a70c3118a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
(3)设二元函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/449a0863faaef6d7994846ca8fdea876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9731a194145af83601ebe5a445c06cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913cc2cb6838616ab239df405327c2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7a708364cfda3f24407e806196fbde.png)
那么,我们称
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91dd5ba2b82d7444f0b7b18ae2d7017.png)
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4 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c74926c2f539695a2c0a460f77b1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 若集合
,
,则
的子集的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b191144d6fa47b31cfb62ee993b8cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07436ab766ccdc78cc443ffcd772b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.1 | B.2 | C.4 | D.8 |
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2024-05-07更新
|
303次组卷
|
2卷引用:广东省广州市第六中学2023-2024学年高一下学期期中考试数学试题
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6 . 已知集合
,
,则
中元素的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4535c4532c477b59fcb087327b0708fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5e8b3bbf6cc7415a9d0ecf13aa6136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.1 | B.2 | C.3 | D.4 |
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7 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638c5d60aa6dd2032f391d11b934ce62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e39c8d9bd352f24398bae5a3ebd9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-02更新
|
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2卷引用:广东省梅州市曾宪梓中学2023-2024学年高一下学期期中联考数学试卷
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8 . 已知集合
,
,
,则集合
的真子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d362fcd96379ade0ab47ee49df4bf274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843cef8fb1cfb59f17e461e78d8d1809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc00530f6f306d83e3e197b6df5d1c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.2 | B.3 | C.4 | D.8 |
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解题方法
9 . 设全集
,集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057decf81b04956ac9e7afd87a54789b.png)
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028f0211dc544fddf0a593996177c613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ee07394944fd44f3caa77ad0566224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057decf81b04956ac9e7afd87a54789b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077095f7598a9bb937996b17b0a28362.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:广东省汕头市潮阳区河溪中学2023-2024学年高一下学期期中考试数学试题
广东省汕头市潮阳区河溪中学2023-2024学年高一下学期期中考试数学试题广东省东莞市东华高级中学2023-2024学年高一下学期期中教学质量检查(二)数学试题四川省达州市万源中学2023-2024学年高一下学期4月期中考试数学试题(已下线)【讲-基础版】1.1集合(高三一轮)(已下线)【讲-基础版】1.1集合(高三一轮)1(已下线)2024年高考全国甲卷数学(理)真题变式题1-5
2024高三·全国·专题练习
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解题方法
10 . 已知集合
,若
,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb1a7ffbd6488fe3f8dc1915ab7ad49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7f14bf7f60fe19b509223284455f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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