1 . 已知函数
的零点
,其中常数a、b满足条件
,则n的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee744085c36b9186f2eac9cb4e8d9ce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0684fd8f7f0e5af001f26fa2343836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d10c4db0dd5052b24db86bd7fc00ed.png)
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2 . 设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6aeb6e3fb0cca7914d213834f4b81d.png)
.则满足条件的所有实数a的取值范围为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a2d7c67748749a033294d20ec56360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6aeb6e3fb0cca7914d213834f4b81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8e55a04c453597afecaefd77be2e81.png)
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2018-12-22更新
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219次组卷
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3卷引用:2008年全国高中数学联赛吉林赛区预赛试题