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1 . 已知集合
,
,且
,则实数
的取值范围是___________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bc4d83a760d154b336003dab73e570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4505338a49592886ff2900dd593e8e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f275d020321ed5cf4a9e3181c15a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2021-09-30更新
|
442次组卷
|
4卷引用:吉林省长春外国语学校2021-2022学年高一上学期第一次月考数学试题
名校
解题方法
2 . 若集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0d2a6750330ebe1cf1b3a65825d0e6.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9cdb56443453fb68522e64bef7f8928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0d2a6750330ebe1cf1b3a65825d0e6.png)
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3 .
,则
用区间表示为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd526016fc39b44954284bf4f99c0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2af10c879e050e80b4dc4c411adc298.png)
您最近一年使用:0次