名校
1 . 已知函数
,
,若对任意
,总存在
,使得
成立,则实数a的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f7f6da396c07c7b464d46a905177acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab80139a6dacbd42c2958f792202f0e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2613056f6a56cb05bbc81efd27ef2f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5971eb73df8b9a8987f03621740098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7265cc6303c6cfc6debfab61c27fb452.png)
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2020-10-17更新
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2卷引用:上海市曹杨二中2020-2021学年高一上学期10月月考数学试题