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1 . 已知集合
,
.
(1)若
,求
;
(2)若存在正实数m,使得“
”是“
”成立的充分不必要条件,求正实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d650aea6653b3cb02445d9956e6613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57301affcbcc37af97b7cd88ee96ca.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若存在正实数m,使得“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
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2 . 若集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c12fb338ab330097e0a475a949fd6fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5008888976c5b3f4720b31c1a0baa140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
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解题方法
3 . 当两个集合中一个集合为另一个集合的子集时,称这两个集合构成“全食”;当两个集合有公共元素,但互不为对方子集时,称这两个集合成“偏食”.对于集合
,
,若
与B构成“全食”或“偏食”,则实数
的取值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0f8db314a714873509ffea53a6b2c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2464c7eefb482d1f04cfd300d93c4e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.-2 | B.![]() | C.0 | D.1 |
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4 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e549c2e32b0db09d19a8daa9a4a5773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-12-27更新
|
254次组卷
|
2卷引用:浙江省湖州市第二中学2024届高三上学期期中数学试题
名校
5 . 在数学漫长的发展过程中,数学家发现在数学中存在着神秘的“黑洞”现象,数学黑洞:无论怎样设值,在规定的处理法则下,最终都将得到固定的一个值,再也跳不出去,就像宇宙中的黑洞一样.目前已经发现的数字黑洞有“123黑洞”、“卡普雷卡尔黑洞”、“自恋性数字黑洞”等.定义:若一个n位正整数的所有数位上数字的n次方和等于这个数本身,则称这个数是自恋数.已知所有一位正整数的自恋数组成集合A,集合
,则
的非空子集个数为________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b947fbaa14e29bb2d39ee68db8ad9f9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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解题方法
6 . 已知全集
,集合
,集合
.
(1)当
时 ,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6c2f43fde3f76e6b61117487f1d0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6fd5ed246988cc93751f840195a2ce.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b21672fd907c5c92fee1d649e7003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9ee4df3cd0c5982eec8be19e136130.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ae3bb39a224d9d8149f7a259ab4765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 已知集合
,
.
(1)当
时,求
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b23e26c4df72d49a3bf585964cc0e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6025f3cbd531a0dbfc23b26a95bb01a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 已知集合
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f070317b8256a7112e33c71c152aa.png)
(1)求集合
;
(2)若
,求实数
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a36bebd47d33f7450a7d355446dc891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5e3b32a8ffcac8433d0d14a52261ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f070317b8256a7112e33c71c152aa.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6ca098b764e0366d043b69ae9d8f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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9 . 已知集合
,
.
(1)若
,求
;
(2)若“
”是“
”的必要不充分条件,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6839070f88efdba97c2aa41c6b774c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c5dc9496e3d3b93e436518cacaa59a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbf6506e9de40da0f3c51b81b35a901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
您最近一年使用:0次
名校
10 . 已知集合
.
(1)求
;
(2)若集合
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07311c514196c3664c7f2e56d0898aa2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d9f59f3474f9dbfde4d279accbcdb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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