1 . 用
表示非空集合
中的元素个数.对于集合
,定义
,若
,
,设实数
的所有可能取值组成的集合是
,则下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3b13b79a46dfef4718ebde60a90972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0327533a28c343f5da79742c1d467161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78a96152c480ec21462f47f3728ed0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3dc64b11063b01e9b2a2189a68857ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
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2 . 已知函数 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1f088d1005c95bb6e1b8dd4c151616.png)
(1)当
时,求方程
的解集;
(2)设
在
的最小值为
,求
的表达式;
(3)令
若
在
上是增函数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1f088d1005c95bb6e1b8dd4c151616.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8b002680c476b8323c4b67e8bc999e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a040e579bed22012e8f3a2cdd3482645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-10-29更新
|
396次组卷
|
2卷引用:重庆市西南大学附属中学校2023-2024学年高一上学期拔尖强基联合定时检测(一)数学试题
解题方法
3 . 设不等式
的解集为
.
(1)求集合
;
(2)设关于
的不等式
的解集为
.若条件
,条件
,且
是
的充分条件,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efee2a63641d00a36ed01442b834ff34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d30bcad95cb1286de0e5cb7f074db4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7ab45636a934ba2d6ff7bf4be60653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d068729e449f05a9d5821a7f95589b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 下列说法错误的是( )
A.集合![]() |
B.设![]() ![]() ![]() ![]() |
C.若不等式![]() ![]() ![]() ![]() ![]() |
D.实数![]() ![]() ![]() ![]() ![]() |
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