名校
1 . 已知函数
,记
的解集为
.
(1)求集合
(用区间表示);
(2)当
时,求函数
的最小值;
(3)若函数
在区间
上为增函数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435c302bfbc4819177fa2a064404341f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b61adc4745f283e4072ddd762f92ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc10580ae53f90dfccd9816789fd8861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8705637c89c41594ff5889e02adc17.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c9dc3741b08287f0e80f659c515dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-11-07更新
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2卷引用:湖南省常德市临澧一中2019-2020学年高一上学期段考数学试题