已知集合
,
.
(1)若
,求
;
(2)若
,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/09948f8d4c554d959dec75b07241eb2e.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/dd179c0a189147aca33803c37b3e5637.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/e5a75f97b9f54c4d8fc1b178ad5f96b4.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/a5d96c2035dd44a7b5c2241a5e9d81aa.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/9ca660e24990410e928780bc0da134d7.png)
![](https://img.xkw.com/dksih/QBM/2016/1/25/1572465649549312/1572465655439360/STEM/a4d2a5e875224da88550f996b0121c98.png)
更新时间:2016-12-04 01:32:28
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名校
解题方法
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