名校
1 . 设集合
,
.
(1)若
,求
;
(2)当
时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a0a502362cd14fedc6fe648dd1751e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf0201291b6b3f67e43ec9684266ef3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b569bd1df594e70666e9f6ea3d851a4.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8fddb00c7b2782f595bb9623945edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2019-11-15更新
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5卷引用:内蒙古赤峰市宁城县2019-2020学年高一上学期期末数学试题
名校
2 . 已知集合A={x|x2-(a-1)x-a<0,a∈R},集合B={x|
<0}.
(1)当a=3时,求A∩B;
(2)若A∪B=R,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ecfbc5eec4b0fa1fba996da145a736c.png)
(1)当a=3时,求A∩B;
(2)若A∪B=R,求实数a的取值范围.
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2019-04-25更新
|
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3卷引用:【全国百强校】内蒙古杭锦后旗奋斗中学2018-2019学年高二下学期期中考试数学(文)试题
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3 . 已知集合
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1dbed0813c67a81a3a76c288a3f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f12d3b59d9f37f4d579a2a66769075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2b179bb96210bc5b0478597b6747f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e4840f05483804b04b8ef2cd46b26e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1dbed0813c67a81a3a76c288a3f105.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-03-09更新
|
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9卷引用:【市级联考】陕西省榆林市2019届高三第二次模拟数学(理科)试题