1 . 已知点
在函数
的图象上,点
在函数
的图象上,且
,
,
,给出下列说法:
①当
时,
;
②存在点
在直线
上;
③
,
,使点
和点
为两个函数图象的公共点;
④若点
在函数
的图象上,则函数
的周期是
,
两点间距离的整数倍;
⑤定义满足长度
取最小值时的区间
为最小区间.若
,区间
是满足
的最大区间,则函数
的周期为
.
其中,说法正确的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369e2cc0b7c553969627461819e80229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04129b7390acd7d936fbd204cc111dcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6db7130ea4b0ea4da3d316b3070f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7602e4015d02cb188ffb82092ee980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55b59c92a868cc6f448e5d92d257401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96d62cdf358f79c7831dd009c26430c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b519531dbeee800a08ba5ce55ff7e51.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d387a4f4ed6f48afd7fc75ff68ae026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75ff0c325ddcac48cf1c233f033c2c7.png)
②存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67de794bd1d73ebe1e7fca6622579587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677ad4c4ea0722f0ee064f44624c585f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96d62cdf358f79c7831dd009c26430c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369e2cc0b7c553969627461819e80229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6db7130ea4b0ea4da3d316b3070f46.png)
④若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6db7130ea4b0ea4da3d316b3070f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e59bc063c88b1add34184da82283251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e59bc063c88b1add34184da82283251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
⑤定义满足长度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31d1c786e88987bb3bc7c54b7b66819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63313f7ac7402fcb5a9a840db64c6f08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85cbdee531d4b394d674d90adda132b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b83fe99c90a7bf139a7e6e537820c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00feb80debaf63029240652a21b4b38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04129b7390acd7d936fbd204cc111dcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
其中,说法正确的序号是
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