1 . 已知
,
是方程
的两个复数根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebc9ed7afbc9101fc9986d3920cfbe7.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5524db746a8df943e00507a30f5b4715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebc9ed7afbc9101fc9986d3920cfbe7.png)
您最近一年使用:0次
解题方法
2 . 已知
,
,
,则y的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3606fd3966dc72e0f8a32047945a86e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/919af37e54128cf09eb6e838f09420b0.png)
您最近一年使用:0次
3 . 在数字
和
中,更大的数字是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172370f9adae2e388a4a777ad92ca18f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013407782cf6bdec227a4e6ad8c9dba7.png)
您最近一年使用:0次