1 . 关于函数
有下述四个结论:①
是周期函数;②
的最小值为
;③
的图象关于
轴对称;④
在区间
单调递增.其中所有正确结论的编号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f830d86c8c625b2cc9e68bd6ef116c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22549af4ce079c7cdcc2ecf594354e6b.png)
A.①② | B.①③ | C.②③ | D.②④ |
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2020-02-06更新
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3卷引用:2020届福建省莆田市(第一联盟体)学年上学期高三联考文科数学试题