解题方法
1 . 给出下列四个命题:
①函数
的一条对称轴是
;
②函数
的图象关于点(
,0)对称;
③函数
的最小值为
;
④若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e403f5ec0e9583239471ceb8220c1d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
,则
,其中
;
以上四个命题中正确的有_____________ (填写正确命题前面的序号).
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea4082f793e7ad8a12eb7cd5ae3adcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1fdf446eb9077f163e87b506e35353.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5170e87322172ef27379adb171d4b76e.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f97c89b747c41611d35f29d1347f8e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e403f5ec0e9583239471ceb8220c1d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e89984bfc3103277c70d426dbe68b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d1d292ef200c73532b84de2410c53a.png)
以上四个命题中正确的有
您最近一年使用:0次