已知
,给出下列五个说法:①
;② 若
,则
;③ 函数
的周期为
;④
的图像关于点
成中心对称.其中正确说法的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3f903a52b02d204c382e54edc3e819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50222ca91ac1585fa0185a9c37d55b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1937d83a1f8f6a980d407360e9e81efc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb6181b6a8118c8e18134a4f8a64f364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d05ade9a55891b80739e3de045a9852.png)
更新时间:2016-12-03 15:16:59
|
【知识点】 三角函数图象的综合应用解读
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