已知函数
,下列说法正确的序号是___________ .
①函数
的周期为
;
②
;
③
在区间
上单调递增;
④
的图像关于点
中心对称.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca8d78287a3c0b07fa422c8d872ef32.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4668a4ca56f8506fc35535f6aeaa262f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4814cc69393408433ac56a06c8e86855.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fee0e4f79e30bbff8e4be338f6adec.png)
21-22高一上·陕西西安·期末 查看更多[2]
更新时间:2023-01-04 09:56:23
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【推荐1】记函数
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【推荐1】已知函数
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【推荐2】给出下列四个命题:
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①函数y=2sin
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c502e0658b9a1ff5492dbede92d444b.png)
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②函数y=tanx的图象关于点
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③若sin
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名校
解题方法
【推荐2】已知函数
的图象如图所示,则函数
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名校
【推荐1】设函数
的图像为
,有如下结论:
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;
③函数
的单调递减区间是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d74b23f49ad01e8c95776ddde331a1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①图象
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4eae5056ae4e4f11c49fe4b1fb67908.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d74b23f49ad01e8c95776ddde331a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00895a9bbbedce5f8a705d2dd5efbd2a.png)
④图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
其中正确的结论序号是
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【推荐2】已知函数
,下述四个结论:
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②若
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在
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①若
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②若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc161789c71cb3865a595431ec66db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
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④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d47dbed3333b180fce58a6d9e440f6.png)
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其中所有正确结论的编号是
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