已知集合
,
,
.
(1)求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597bbc9a6f795e5847684f5b6c34a558.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572321511899136/1572321517723648/STEM/98f2fc80dd584b62bef49bbdc76f32a5.png)
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572321511899136/1572321517723648/STEM/ae69156d17ed41feb92da28d2db02063.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d259db9bb0e132881e875a77d324057.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2015/11/27/1572321511899136/1572321517723648/STEM/6e7d4230462147acadf48f702c79b3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2016-12-03 20:39:13
|
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适中
(0.65)
名校
【推荐1】已知集合
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【推荐2】已知集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1257079e4575b8a243f15573bd68dd9c.png)
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3ea46bcfd4d1ade2e65f8b28b7f7e1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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