已知集合
,
,求
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b947d2f754d89810685d1202fc960845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89e921275401cb281f1e9c05ff0230e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7e19e513d0c9b230ae5c777879fd5e.png)
更新时间:2020-09-03 12:42:06
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解题方法
【推荐1】已知集合
,
,
,
.
(1)求
,
.
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860ebb6f76cd3cb9a265dfc233002a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad0f7c904d295ebe1eb561e1f0b7306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e5db50d5d4b057f1ce633d3b5e63be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62369a711373d54929efe7fd490b40a9.png)
(1)求
![](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/8dc8587831c053e64bf946cf7ec062f2.png)
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【推荐2】已知全集
,集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcbd449c550f59e3fe2ceb5acef63b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dc2fa51d34e89aa2442db670c2c1da.png)
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea81ba1fd51070adf926cc9a0374af7.png)
(2)如果
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94986e9228f3a6e4d005b7a491b72818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcbd449c550f59e3fe2ceb5acef63b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dc2fa51d34e89aa2442db670c2c1da.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea81ba1fd51070adf926cc9a0374af7.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46fdf7db887d5659fa6bfe223cc42f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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较易
(0.85)
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【推荐3】已知集合
,
.
(1)分别求
,
;
(2)已知集合
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00204e8213b749e056fe0b61f8359640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b5ab24ef565bcd9e06c7f2a213c49f.png)
(1)分别求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a4a3372841cc76036123654130629db.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e982a263297128e0ead9fe7fe5f6ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6ca098b764e0366d043b69ae9d8f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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