名校
1 . 已知集合
,
且
,则实数a的最大值是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0673c352719c53bbbb101447ba368453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/929bf414d9cea55b838a259e3999b3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976b8c69985807dcc092cf33ccebac3a.png)
A.![]() | B.![]() | C.0 | D.1 |
您最近一年使用:0次
名校
2 . 已知集合
.
(Ⅰ)若
,求实数
的值;
(Ⅱ)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/904db105ab0783790410441787902e30.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
3 . 已知集合
,
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0444fdc3a544e16b6817e43ee1d6ba.png)
(1)当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a601bdd557647b74d75a6b80181c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6e43caaae960c25c9390ca7d80b845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0444fdc3a544e16b6817e43ee1d6ba.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-01-31更新
|
288次组卷
|
2卷引用:陕西省渭南市韩城市新蕾中学2021-2022学年高三上学期第一次月考数学试题
名校
4 . 已知集合
为函数
的定义域,集合
.
(1)当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8c91926ffb8dddca8df93307e80e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e53b41903abccffacc36e02705ff582.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551fd8cd8ea61d794c13074ccd7d6c4e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-04更新
|
421次组卷
|
3卷引用:江西省赣县第三中学2020-2021学年高一12月月考数学试题
5 . 已知集合
,
,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c60d691dbafc1085607b4c67c264bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c8376fcd00f24b82900c4a1761ba49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd1398c1b1a7e79a8cc305ae62f4afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.3 | B.2 | C.1 | D.0 |
您最近一年使用:0次
2020-10-15更新
|
338次组卷
|
2卷引用:湖南省怀化市新晃县恒雅中学2020-2021学年高二上学期第一次月考数学试题
名校
6 . 已知集合
,
,是否存在实数
,使
,
同时满足下列三个条件:①
;②
;③
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1508742cff23b60aa2f5e48dd3ce1f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48de3fb022e2fc337a3c945c24676364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.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/eb584b83ae783a0ec8a9b4628b7fca3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd7fbcdb1cc901fad3c3d9a5822ea00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-11-04更新
|
451次组卷
|
2卷引用:山西省朔州市怀仁一中2019-2020学年高一上学期第二次月考数学试题
名校
解题方法
7 . 设集合
,集合
.
(1)若
,求实数
的值;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97927627b6890964c516f02dc34ed2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f3244015dd2dede844f510bab48635.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc992c9e51d4b22232adf6bb5c8055a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-23更新
|
282次组卷
|
3卷引用:河北省唐山市第一中学2021-2022学年高一上学期10月月考数学试题
8 . 若集合
,
,
.
(1)求
;
(2)若
,求实数
的取值范围;
(3)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc4fc8c5d31916f716c5b8b44e23644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25358871fe728b2af44d911e06151d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36b6ea11971efe6c4b83b8c744016e3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323b7a0ca1495a6759045afb3255d33e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95321d0e551daa25104d32157249c23d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a693dd9988a6e003a239f3e37c1b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
9 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
不可能 是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e82f14efbf69cffceb67f2714e56da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知集合
,
,若
,则实数
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53859a7e33a083b04c609781e90d0766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce323337a7729908e3025af819aaa1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543c1d097fd60d31c530ca9fac0273b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2019-12-25更新
|
370次组卷
|
2卷引用:四川省内江市高中2019-2020学年高三上学期第一次模拟数学(文)试题