1 . 设函数
,
为常数.若存在
,使得
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab5ca6908d99b49a77f86252eb09db24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdc6e6a0e6584bea7deb91b0841fa28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36825543013336c9df727bc51ff62c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
2 . 若函数
值有正有负,则实数a的取值范围为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca7da4dfbfdf416059221b3fbf29527.png)
您最近一年使用:0次
2020-11-18更新
|
559次组卷
|
5卷引用:内蒙古集宁一中(西校区)2020-2021学年高一上学期期中考试数学试题
名校
3 . 已知方程
的根
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007b30b37685c726a7a5461d48cf3403.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c39608fe6752eee88ccc8ae81932f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505a1542cecaaba771cee0f0cc8ef991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007b30b37685c726a7a5461d48cf3403.png)
您最近一年使用:0次
2017-09-12更新
|
681次组卷
|
6卷引用:2014-2015学年内蒙古赤峰市元宝山区高一上学期期末统考数学试卷