1 . 在平面直角坐标系中,若不等式组
所表示的平面区域内存在点
,使不等式
成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53dd8ea06b60ef3fa0fae5330aec46c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f4746d41d9f04fec08f989889c8c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-04-13更新
|
324次组卷
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2卷引用:北京市西城区第五十六中学2022届高三数学零模试题
2 . 已知
,集合
,
,如果
,则
的取值范围是______________ .
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572097151598592/1572097156669440/STEM/b351ef455ddb484b86c5d3ad9c74e016.png?resizew=73)
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572097151598592/1572097156669440/STEM/e4b6e7993cb94510a130d29cc82f76ec.png?resizew=143)
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572097151598592/1572097156669440/STEM/8fee47d7787e4020b8e5b71d39567a6f.png?resizew=161)
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572097151598592/1572097156669440/STEM/0fcca10e44bd45a5a7a4970dd7cb4c60.png?resizew=68)
![](https://img.xkw.com/dksih/QBM/2015/5/11/1572097151598592/1572097156669440/STEM/f3466911e5574f91879c82238d7601c0.png?resizew=9)
您最近一年使用:0次
3 . 已知
,集合
,
,如果
,则k的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ade5d5b877300624f159b0ef07dfb07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce6c9179552c5115767dfaf219d6c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336517bdfb6d9cc969763edfb63bd966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c6551ee063ba33d1896f24275f921a.png)
您最近一年使用:0次