已知
,若方程
有四个不同的实数根
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae422bb772273031a30efde98130a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1602d26f37ad945a5e159a1e43cfdb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3d41be26be9622d0cbc9825778b362.png)
更新时间:2022-09-29 09:12:38
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