设集合
.
(1)若
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475cfd5ea991b5a2c96e9abc9a280a98.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2023-12-28 14:53:49
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解题方法
【推荐1】已知集合
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【推荐2】设全集为
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![](https://img.xkw.com/dksih/QBM/2018/1/17/1862466306482176/1864268240510976/STEM/e5f461bf83c94ddaa15c32bd64b2391f.png?resizew=166)
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![](https://img.xkw.com/dksih/QBM/2018/1/17/1862466306482176/1864268240510976/STEM/f0be38de453a407489585db7f153c7d1.png?resizew=14)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738808e6795c22c7154c17d9f673f263.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1816d6c3911fe02fe078e6edf774156a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544f0f6c8ff7d1a160e22a8d69c97ebb.png)
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