不等式组
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686de5eb4380ab0a75ae561bca115a6e.png)
A.x≥2 | B.﹣1<x≤2 | C.x≤2 | D.﹣1<x≤1 |
16-17七年级下·全国·单元测试 查看更多[6]
人教七年级下册数学第九章-不等式与不等式组单元测试2018人教版七年级数学下册练习:第九章达标检测卷2018七年级数学下册9不等式与不等式组达标检测卷新版新人教版人教版七年级下9.3一元一次不等式组(已下线)【万唯原创】2018年河南省中考数学试题研究-2018年选填题组集训7+8(已下线)【万唯原创】2018年河南省中考数学试题研究小专项-河南数学选填-全真模拟演练1+2
更新时间:2018-01-08 22:31:45
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【推荐1】若不等式组
无解,则不等式组
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd8371c02ef041de81b9359722c4f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13390bfa0bfb10c65f12df0b1bfabe40.png)
A.![]() | B.![]() | C.![]() | D.无解 |
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单选题
|
较难
(0.4)
【推荐2】已知关于
,
的方程组
,其中
,下列说法正确的是( )
①当
时,
与
相等; ②
是原方程组的解;
③无论
为何值时,
; ④若
,
,则
的最大值为11;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f938efc41104e3700345a8bf01bc366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d3c880f30beda2ebf604976dc159c5.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deff214da10afdd8003e3ad7d859dcb1.png)
③无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c960fc862fd36db83082f5c50cd604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239ff12eb6cba0100f0dadb847c90ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99799f9d0a1dbc22c0c9576b09b6f487.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.①③ | B.②③ | C.②③④ | D.③④ |
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