名校
解题方法
1 . 已知函数
的定义域为集合
,集合
.
(1)若
,求
;
(2)若“
”是“
”的必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/518dff1998542da49899871ace3ec161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255669835a81d0816b30c780927bba29.png)
(1)若
![](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/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-01-10更新
|
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2024高三·全国·专题练习
名校
2 . 已知数集
及定义在该数集上的某个运算(例如记为“*”),如果对一切
,都有
,那么就说,集合
对运算“*”是封闭的.
(1)设
,判断
对通常的实数的乘法运算是否封闭?
(2)设
,且
,问
对通常的实数的乘法是否封闭?试证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ec043ebe0cc875c2d222431f0e73a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99176fbe8d266b97cc25ecf0c1bc52e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46144e18dadae0f4dda0267cb29f7d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640bd986238e885d5a95cb50fe53da49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d2698f5839167452e694e57527046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次
名校
解题方法
3 . 设全集为
,
,
.
(1)求
;
(2)若
,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51615a8942b8629ae8979fbbd5c1cd72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b271274e52baea0f2e92b9b9480055ec.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc881d5a6f5c8fad4acccc60e89ff445.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296e2f5304bf73bff97dca78424f9877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f569c191a60a39899b5056aaa74b9f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-01-25更新
|
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名校
解题方法
4 . 已知集合
,
.
(1)若
,求
;
(2)在①
,②
,③
中任选一个作为已知,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61241dcbf7b8710b40fac16129710bb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d50a52751aa2b1a10866d84ba63c6b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e06ae8bafdf18961a3fc1df683ac7a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-01-04更新
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名校
解题方法
5 . 已知集合
,
.
(1)若
,求
,
;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f06c5773e6bfb6deeb78b82b92376b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9108703ef9bb0af10de8114c3b84b48a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59d0acbfdb43bd9dce60e7826e228079.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
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2024-01-02更新
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7卷引用:江西省上饶市玉山县第二中学2023-2024学年高一上学期12月月考数学试题
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名校
6 . 已知集合
,
.
(1)若
,求
;
(2)若“
”是“
”充分不必要条件,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd310f0271106c472a4245d6184edab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973e4eaa73f03783d0889b10a3f6f48d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182738e8b0915e50c3a87054ec6eba8c.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f08f548d6b0614f2ad7b0c1047933.png)
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|
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名校
7 . 设
,已知集合
,
.
(1)当
时,求
;
(2)若“
”是“
”的必要条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d46e5d74665f61fb2f8842c7f867e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b909912820bd5cdcbcf7d093fa75232.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-12-28更新
|
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名校
8 . 已知集合
,
.
(1)若
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361048fd1b1a7f3b7230404a04b7155a.png)
(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/36033bde01fd215cc3406ec5758d16c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bfb9908c18d203f5b238faef7f87002.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54078c4af5b305e26b8e3faa6423e67e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361048fd1b1a7f3b7230404a04b7155a.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
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9 . 设已知集合
.
(1)若
,求
;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284ed52955e89fda8687ff93e465c220.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
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解题方法
10 . 设集合
.
(1)若
,试求
;
(2)若
是
的充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0b6c672bd456272fa22810e6c0a245.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1d318d706ca4ec954246a292293b91a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da331a8c58b97333fcf642c92f089e0c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-12-22更新
|
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