1 . 关于函数
,有下列命题:
①对任意
,当
时,
成立
②
在区间
上单调递增:
③函数
的图象关于点
对称
④将函数
的图象向左平移
个单位长度后所得图象与函数
的图象重合
其中正确的命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3d405a3acd7529df123f8b5810fafc.png)
①对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5223ece2f8f76850c49e2505304532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5d303c7e50db7550c3cba6c618844e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a059e327030c27cd109147e45b5c84.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7791b458c4aaa76c5eeefd994b7166b5.png)
④将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1902d864d3f16535e273f7851b92a4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08921a72d608d1618d765569e752a4e.png)
其中正确的命题是( )
A.①②③ | B.② | C.①③ | D.①②④ |
您最近一年使用:0次
A.①②③ | B.② | C.①③ | D.①②④ |