设集合A={x|x2+mx+1=0},B={x|x2﹣3x+2=0},且A∩(
RB)=∅,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2346db5ec463dedc7700f629c9c0f16c.png)
更新时间:2021-11-08 15:33:34
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【知识点】 根据交并补混合运算确定集合或参数解读
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【推荐1】设集合A={x|x+m≥0},B={x|-2<x<4},全集U=R,且
,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d828196d61ce0006acbded532a7c7a.png)
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解答题-问答题
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名校
解题方法
【推荐2】已知全集
,
,
,
.
(1)求
,
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bf383bb9e68dde1d91355358d45d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df29b2d9bd6cc7130d4153c6894096b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a1f2822378bb9a6139e2c1c62b36edd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7817b055b567e64ea8914a5d6e9b45d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1e53eb3ec2e7414afeb492f1d3b7f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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