1 . 在下列四个函数,①
②
③
④
中,最小正周期为
的所有函数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802ac9e74e56ad33f963f959137f11a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad4f915178031f71baeba3acafe0b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c20c28856587dc8cd4e0842a86709f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a820fa970effe06b2377e7c923f40f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
A.①②③ | B.②③④ | C.②③ | D.①③④ |
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2020-01-28更新
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2卷引用:2020届河北省张家口市高三上学期期末教学质量监测数学(文)试题
2 . 已知函数
,则
是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6aded2ecd9500feecbe04bc6a7b634f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73088b1701b01c07048d9ac8ae021095.png)
A.最小正周期为![]() | B.最小正周期为![]() |
C.最小正周期为![]() | D.最小正周期为![]() |
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2019-02-07更新
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2卷引用:【市级联考】河北省张家口市2018-2019学年高一上学期期末考试数学试题