1 . 已知集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b704aec7ebd334cc8a6342d26edbb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-12-07更新
|
359次组卷
|
3卷引用:四川省德阳市2018届高三三校联合测试数学(理)试卷
名校
2 . 设集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976f2aafba09d69991f00d0050c685b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ff92e30c4760c62fb3ba28c1b2020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-09-13更新
|
761次组卷
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5卷引用:四川省德阳市什邡中学2018-2019学年高一下学期第三次月考数学试题
3 . 已知全集
,集合
,集合
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a64dc61989ca50b9ee19d835c4ed268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12acc5225e32a36272808732f6868946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1f54e85ba8e3f1b263535617c3173b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-06-02更新
|
383次组卷
|
2卷引用:湖南省2017届高三考前演练卷(三)理科数学试题
4 . 给出下列四个命题:
(1)若
为假命题,则
、
均为假命题;
(2)命题“
”为真命题的一个充分不必要条件可以是
;
(3)已知函数
则
;
(4)若函数
的定义域为R,则实数
的取值范围是
.
其中真命题的个数是( )
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
(2)命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6944539e22a089a80168e2878c9ecc52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589883a5d97f0f7ee75dd0c97e9406bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289688ca788f9edb554836fd083313f2.png)
(4)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6810e2bb8de3e83fd73a4f5690de07b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389d79319d0694c3d75bbaf19d0a8581.png)
其中真命题的个数是( )
A.0 | B.1 | C.2 | D.3 |
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5 . 命题p:方程
表示双曲线:命题q:抛物线
的焦点到其准线的距离大于1,已知
为真,
为假,则实数m的取值范围为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3294d3e480607f3a64f25778aeb851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29503794618036343f282e9a38a2d54b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
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解题方法
6 . 设集合P={0,1,2},N={x|x2﹣3x+2=0},则P∩(∁RN)=
A.{0,1,2} | B.{1,2} | C.{0} | D.以上答案都不对 |
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7 . 命题“∃x0∈R,x
+2x0≥2”的否定为
![](https://img.xkw.com/dksih/QBM/2016/3/25/1572558003011584/1572558008483840/STEM/7348235a91094e83b45b43a54c61bc2e.png)
A.∃x0∈R,![]() |
B.∀x∈R,x2+2x≥2 |
C.∃x0∈R,![]() |
D.∀x∈R,x2+2x<2 |
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解题方法
8 . 已知全集I=R,集合A={x∈R|
≤
},集合B是不等式
<4的解集,求 A∩(
IB)
![](https://img.xkw.com/dksih/QBM/2016/3/22/1572552223047680/1572552228454400/STEM/71f55f2ef458477184e3407abc78cc2f.png)
![](https://img.xkw.com/dksih/QBM/2016/3/22/1572552223047680/1572552228454400/STEM/dbbd0c79492047d8ad408c83f0813f1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28594f159c0eabe9146b271dbd1b36d9.png)
![](https://img.xkw.com/dksih/QBM/2016/3/22/1572552223047680/1572552228454400/STEM/1978918a00da4f22a36c39a05b30de27.png)
您最近一年使用:0次
名校
9 . 已知集合A={x|a﹣4≤x≤a},B={x|x<﹣1或x>5}.
(1)当a=0时,试求A∩B,A∪B;
(2)若A∪B=B,求实数a的取值范围.
(1)当a=0时,试求A∩B,A∪B;
(2)若A∪B=B,求实数a的取值范围.
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2016-12-04更新
|
689次组卷
|
2卷引用:2015-2016学年四川省德阳市高一上学期期末数学试卷
10 . 若集合A={1,a,b},B={1,﹣1,2},且B=A,则a+b的值为
A.3 | B.1 | C.0 | D.不能确定 |
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