在数轴上表示不等式组
的解集,正确的是( )
![](https://img.xkw.com/dksih/QBM/2015/7/3/1573862284394496/1573862290563072/STEM/3d9037f34eb0480d83a0319d3acd85dc.png)
![](https://img.xkw.com/dksih/QBM/2015/7/3/1573862284394496/1573862290563072/STEM/4b5a0adf470b4466aebed2c0b4b19077.png)
更新时间:2015-07-03 07:48:21
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【推荐1】二次函数
图象上一点
,当
时,存在
,则m的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f20758d5ec10cee675e0a8d0634e9c.png)
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【推荐2】计算下列各题:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b917aeb90a43d1d276756928df6217db.png)
__________ ;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b52d817c64157e37d78d98b5cf4dbd.png)
__________ ;
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b2852c42f60f3d7e04c7df113f8759.png)
__________ ;
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe11ad5ddb25167176f8ec12bf90c6f1.png)
__________ ;
(5)不等式组
的解集为__________ ;
(6)方程组
的解是__________ .
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b917aeb90a43d1d276756928df6217db.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b52d817c64157e37d78d98b5cf4dbd.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b2852c42f60f3d7e04c7df113f8759.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe11ad5ddb25167176f8ec12bf90c6f1.png)
(5)不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76110072d66c07415b73820e2ac72599.png)
(6)方程组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b62f45005367440be7665abdca1a863.png)
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