已知集合
,集合
.
(1)当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940581e270411226564af4a44692077e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec614ceff8b35c427b45802a2258f31.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2020-12-15 20:26:58
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适中
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【推荐2】已知集合
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc158e1b8f6ab0ce402731f01276c3f.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
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![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948552134656/1571948557918208/STEM/cdd4daabb3da4c379beade42a37744ee.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571948552134656/1571948557918208/STEM/8a3bf17080934743b961e6edcf88d30e.png)
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适中
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名校
解题方法
【推荐2】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f75cad4a6e611e79e1a9bc41f9e344a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2855c9d5541b04347f9b3ea405f257df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次