名校
解题方法
1 . 定义集合运算
且
称为集合A与集合B的差集;定义集合运算
称为集合A与集合B的对称差,有以下4个等式:①
;②
;③
;④
,则4个等式中恒成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f4bcaec7926363d8f77c6e773920d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f1e3675e0fa3b790c416a751af63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fd86cfc7b165670282764b9cb98d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824966367aba23c3f96b2b4fc1898af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e303d1336737897700f30df316f010f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906d698d5ea771e934ac68bcfffd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f574fa7e3930300a7457d933768200.png)
A.①② | B.①②③ | C.①②④ | D.①②③④ |
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2024-01-13更新
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318次组卷
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10卷引用:江苏省南京市田家炳高级中学2023-2024学年高一上学期期初检测数学试题
江苏省南京市田家炳高级中学2023-2024学年高一上学期期初检测数学试题(已下线)高一上学期第一次月考选择题压轴题50题专练-举一反三系列(已下线)单元高难问题01集合中的新定义问题-【倍速学习法】(沪教版2020必修第一册)(已下线)第一章 集合与常用逻辑用语(压轴题专练)-速记·巧练(人教A版2019必修第一册)(已下线)专题1-1 集合及其运算的12种题型(2) -【巅峰课堂】题型归纳与培优练2023新东方高一上期末考数学02上海市建平中学2022-2023学年高一上学期开学摸底数学试题(已下线)专题01 集合与常用逻辑用语4-寒假作业单元合订本上海市行知中学2023-2024学年高一上学期期末数学试卷(已下线)考点3 与集合相关的新定义问题 --2024届高考数学考点总动员【讲】
2 . 成化高中小伟同学在学习完第一章集合后对高中数学非常感兴趣,他在图书馆查阅资料后发现在集合论中有“差集”的定义如下:
且
.
(1)若
,
,求
;
(2)若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45646f1d1ef972f499b10300cb3b7ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96666d7db8f0039109942e6cf468ed1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9e6ad1166c7625e63b80e75b2fb1d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2755a85584173902f146eacf40102723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cb7961d2d6957cfd6b4af403450e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6846ad147da3f53658602eade09631d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
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名校
解题方法
3 . 对于集合
,
,我们把集合
叫做集合
与
的差集,记作
.若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8734b8776bdb5382fc6c4008f9d76d73.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/ac9a156c86b5cb3d39c16f7a7104c3bf.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/5e9e460c144f7a2141d2df0308b125f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83f7d5548c373c321648c939b6a720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce88813366dded69ee63fc25d7326fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8734b8776bdb5382fc6c4008f9d76d73.png)
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名校
解题方法
4 . 用
表示非空集合A中元素的个数,定义
,若
,且
,设实数
的所有可能取值构成集合S,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cf604541d1a4d2cd82cf69a832f298.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3b13b79a46dfef4718ebde60a90972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04a2de10b8e886b0ade503861e5c7d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5e7d4ebae864d7e66f68660da3c487d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6335658a75a4f78c17a8c7bb108121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cf604541d1a4d2cd82cf69a832f298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://img.xkw.com/dksih/QBM/2023/10/31/3357842145837056/3357999281332224/STEM/5171e8ae56c74be8a099f1ef04c29400.png?resizew=4)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-11-29更新
|
276次组卷
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17卷引用:江苏省常州市第一中学2023-2024学年高一上学期期中考试数学试卷
江苏省常州市第一中学2023-2024学年高一上学期期中考试数学试卷湖北省宜昌市宜都市第一中学2023-2024学年高一上学期期中数学试题陕西省西安市长安区第一中学2023-2024学年高一上学期第一次质量检测数学试题2015-2016学年广东汕头金山中学高一上学期期中数学试卷湖北省襄阳市第四中学2017-2018学年高一10月月考数学试题河北省衡水中学2018届高三上学期一轮复习周测数学(理)试题2018届高三数学训练题(1 ):集合的关系与运算 湖南省长沙市长郡中学2018-2019学年高一上学期10月月考数学试题湖北省武汉市新洲一中阳逻校区2019-2020学年高一上学期九月摸底考试数学试题上海市嘉定二中2017-2018年高一上学期期中数学试题四川省绵阳市三台中学2019-2020学年高一上学期9月月考数学试题上海市七宝中学2015-2016学年高一上学期期中数学试题陕西省西安市铁一中2020-2021学年高一上学期第一次月考数学试题山西省运城市景胜中学2020-2021学年高一上学期9月月考数学试题湖南省长沙市周南中学2020-2021学年高一上学期第一次月考数学试题广东省佛山市顺德区东逸湾实验学校2022-2023学年高一上学期阶段性质量检测数学试题湖南省衡阳市第一中学2022-2023学年高一上学期10月月考数学试题
名校
5 . 用
表示非空集合
中元素的个数,定义
,已知集合
,则下面正确结论正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3b13b79a46dfef4718ebde60a90972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68cbf4edfaa2c40675feb1481b6ade25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ff69c3f01921cd51df0064a871842a.png)
A.![]() |
B.![]() |
C.“![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2023-11-27更新
|
225次组卷
|
2卷引用:江苏省苏州中学校2023-2024学年高一上学期期中数学试卷
6 . 在教材的“阅读”材料中谈到如下内容.德国数学家康托尔根据人们在计数时运用的“一一对应”思想给出了两个集合“等势”的概念:若两个无限集的元素之间能建立起一一对应,则称这两个集合等势.由此,下列四组无限集合中等势的有( )
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
7 . 定义集合运算:
,设
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9380b7396817b05bbbf20711c466b5a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf332e14a6c47ce6bcbaa0a846a19b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e788c53c926d41aea8989d4bd0e814.png)
![](https://img.xkw.com/dksih/QBM/2023/11/21/3372668812582912/3372705814503424/STEM/715c9888a66e45ea966c09d38630c2c3.png?resizew=4)
A.![]() |
B.(![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
名校
8 . 若一个
位正整数的所有数位上数字的
次方和等于这个数本身,则称这个数是水仙花数,如
,所以1是水仙花数.已知所有的水仙花数组成集合
,集合
,则
的子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4291b447692fcd6becaeda53b10095c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4955c4890cd91e0192195187a76f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.4 | B.8 | C.16 | D.128 |
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解题方法
9 . 设集合
,
,
,
,
,
中至少有
个元素,且
,
满足:①对于任意的
,
,若
,则
;②对于任意的
,
,若
,则
.下列命题不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a9e674fa61f737f656d11b3c88dca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5a2f21009e01e4fb578625202e9a17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.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/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8339eab9c659e50db86828b65f825e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d81972b1768d827ba3083f96a273412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5abe56c019ac914e1fcde1865a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5718e9c8baa106b447f9fae23e730de.png)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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解题方法
10 . 对在平面直角坐标系的第一象限内的任意两点作如下定义:若
,那么称点
是点
的“下位点”.
(1)点
是点
的“下位点”吗?请简单说明理由;
(2)若点
是点
的“下位点”,试判断
之间的大小关系;
(3)设正整数
满足条件:对集合
内的每个
,总存在正整数
,使得
是
的“下位点”,且
是
的“下位点”,求正整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459f6bffb30a8d59849c56f577720d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05717f3f86f5f0a83a4770db944e3954.png)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48dfcbfb277fb85226991589d22d333f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d60303635602abf879de7d24e41cde.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05717f3f86f5f0a83a4770db944e3954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f5784682063f10d960611348abbd50.png)
(3)设正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8f13ee6b2f481065f417a785d90330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1801bbe42c778c2a41cdc794033032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac59acac8b760e35bfaf739d7427a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac59acac8b760e35bfaf739d7427a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db2d76972d32c5ecdee30ea55ea9fbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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