名校
解题方法
1 . 已知集合
,
,若
,则a等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac1deb6caffced382ed502e1e3cf389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6f930bd5aa538cdb4b81e3cd3ac546b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
A.![]() | B.0或![]() | C.3 | D.![]() |
您最近一年使用:0次
2023-11-25更新
|
785次组卷
|
7卷引用:甘肃省白银市会宁县第四中学2023-2024学年高一上学期期中数学试题
名校
解题方法
2 . 已知
,集合
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c005028d3af4d4b988edd91b1162b7b5.png)
(1)若
,求集合
(用区间表示);
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45634a4f2180e248a4ba677388de92fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c005028d3af4d4b988edd91b1162b7b5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad96b50521f4bbf3d436d05dc258083d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2017-11-21更新
|
890次组卷
|
5卷引用:甘肃省白银市白银区大成学校2023-2024学年高一上学期期中考试数学试题