已知
,设集合
,
.
(1)记集合
,求集合
的子集个数;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7c4e9a1ae8581cfa2422529af5af36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d0c311063bab19ff71aabb3b07e813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f599ac2e4744c6548a6ae19ab9ec0a.png)
(1)记集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1559c1c2da749cf45deb87a156a19f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ed5930525a04c8fa26e535147e3085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2019-10-25 16:56:18
|
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适中
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【推荐1】已知集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd8a5f4a28f002c99d6dcc26c9ba0db.png)
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名校
【推荐1】已知集合
或
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4ae88488ee8e45f0c57d2025e98d6e.png)
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b6723ffe53c1697a6c520de7706316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aadfd692a18cd9f601afd354ae2ca6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4ae88488ee8e45f0c57d2025e98d6e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fbb681d57b8b98526343978eb76b65a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
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解题方法
【推荐2】已知
,
.
(1)若
,求
;
(2)从①
;②
;③
这三个条件中任选一个,补充在下面横线上,并进行解答.
问题:若__________,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59c05cce2336b520c663cccfffc54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44decad6c003a96658755e69a5b64deb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab907894aec35b45d1520c8fbdc3c50d.png)
(2)从①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624be5a872530ba39589c9a82279d5c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149fbbd377dbfce3378769cf19debf40.png)
问题:若__________,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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