1 . 已知方程
有4个不同的实数根,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898a12cd8c10062cd9962f342b2a2d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-07-21更新
|
1534次组卷
|
5卷引用:2016届福建厦门外国语学校高三5月适应性数学(文)试卷
2 . 已知集合
,
,则![](https://img.xkw.com/dksih/QBM/2016/8/30/1572993831092224/1572993836335104/STEM/9b2ed82b2dac4a78913d4f89e4e3a715.png)
![](https://img.xkw.com/dksih/QBM/2016/8/30/1572993831092224/1572993836335104/STEM/d4587ef9250e4d3f851025824d5116c7.png)
![](https://img.xkw.com/dksih/QBM/2016/8/30/1572993831092224/1572993836335104/STEM/8f04640da8a14a7a9a709860af2e7621.png)
![](https://img.xkw.com/dksih/QBM/2016/8/30/1572993831092224/1572993836335104/STEM/9b2ed82b2dac4a78913d4f89e4e3a715.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd99fbfb766de1fe3352cd65d68cd412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a639fb04f9c954e26b625ce96c96234c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f7c3dc3caa2bd3d166660937c0a92d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次