已知集合A={x|3≤x≤9},B={x|2<x<5},C={x|x>a}.
(1)求
;
(2)若
,求实数a的取值范围.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521c8f3f084af427ec1c464f8b6bed86.png)
更新时间:2021-09-09 17:45:47
|
相似题推荐
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知不等式
的解集为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a12e4b86bd23127a4ff94e149c2aed.png)
(1)求
;
(2)若
,求
的值;
(3)若
是
的必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cce66ea8d81788f94a2e093c3b0e246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a12e4b86bd23127a4ff94e149c2aed.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc992c9e51d4b22232adf6bb5c8055a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)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)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知集合
,
.
(1)当
时,求
与
;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca717c6a55e786238e64f7ebd69b9b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e187f1ad0a35028136056f40123b44.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】(1)设全集
,集合
,
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d54ea72a001447850440c07ce0a9412.png)
(2)若
求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c092b1defee81ae406b4ec6d41cdad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a8c3ec460702437991738a36d6774a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efcec46bf878e541f4faa76c98c11d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d54ea72a001447850440c07ce0a9412.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b366bd12b731cfa3dda3a8b86d10f194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ca2347e0359a427810a968972dbcfd.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐2】已知集合
,集合
.
(1)求
,
;
(2)求
的所有子集,并求出它的非空真子集的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbbcd0710c46a43eaa872f91966325a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c1f19fb2321a717c1e8c8927a93a5c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
您最近一年使用:0次