1 . 已知函数
,现有下列四个结论:
①
的最小正周期为
;
②
;
③
的图象关于直线
对称;
④
.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b381fba84b49b16d238b9485a053da2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d63a28c9bcb3f34824f1e64e67360e1.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f51280a3aee771944255bc564bc7613.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa18fe438caaec526c724f621c590d31.png)
其中所有正确结论的序号为( )
A.①③④ | B.①②④ | C.①③ | D.②④ |
您最近一年使用:0次
2 . 有如下四个命题:①
在第一象限内为增函数;②
关于直线
对称;③函数
的值域为
;④函数
的最小正周期为
.其中正确命题的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a2ec02caf837c6e7e0b76dd9acc7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69640303e27e3b114c87250c452aca6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbc72a247f21328f9be816fdaba781f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
A.①② | B.②③ | C.②④ | D.①②④ |
您最近一年使用:0次