已知
,
.
(1)求
;
(2)已知集合
,
,
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e26de6044c2991bebf72abd90a1ad04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905c8d95943527da487c45f934f05f7b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be00d76fbb4b2b56946ead3002af429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01261ced3975f5fc5f66fa4e3970690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1ba8e98fc7bd11f19382c1d296054f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-12-03 16:46:15
|
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解题方法
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(1)若
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(2)若
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(2)若“
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/511a6747a3b7b240851bf3c3a1fe448d.png)
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适中
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适中
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