名校
解题方法
1 . 已知函数
.
(1)当
时,
的定义域为A,不等式
的解集为B,求
;
(2)若对任意的
,
,有
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92faa63f0f0b144600e077009eb956e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd46c41e04bfee4ed5af5a27ed2d1d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a98c9cf4676d88967e655055028e70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f801d12746184aae9d8f635e80af5ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65735db704c976419788826815a7315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8c69aaecfbe4d8bd7cf01a3b79c50.png)
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2022-05-09更新
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461次组卷
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2卷引用:四川省德阳市第五中学2021-2022学年高一下学期4月月考数学(文)试题