已知集合
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75367356373d65a0355779838c3b3de5.png)
(1)全集
,当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05523d501d687757bcd0d1ad002b76d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75367356373d65a0355779838c3b3de5.png)
(1)全集
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceee623c66cd4f74cd78681e62b3bdac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4815b1d16a7ae485ff0bba0b397e893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2021-11-24 22:18:52
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(0.85)
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(2)若
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【推荐2】已知集合A={x|2a<x<3-2a},B={x|x<5a+1}
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(2)若A∩B=∅,求a的取值范围.
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解答题-问答题
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较易
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(1)若
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(2)若
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名校
解题方法
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d85b8aedaaf52431bd872d45efa52dc.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959f3c514abb15185a429e1b2f1674e5.png)
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