下列说法正确的是________ (只填正确说法序号)
①若集合
,则
;
②
是函数解析式;
③
是非奇非偶函数;
④设二次函数
,若
则
①若集合
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/67fd5e8c96244d2ba7baf0607451dcee.png?resizew=245)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/f165d548e7ba47488b4e994a3ea61188.png?resizew=145)
②
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/9d6664fe65924c299c91a1b29e01ca8c.png?resizew=132)
③
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/0ffed11544dd4fab90aa8a59c5cbdb45.png?resizew=96)
④设二次函数
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/3c6139bd7bf3418da7b3cb743c203a35.png?resizew=173)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/f548fdda537041019c4e86e2c0231d88.png?resizew=153)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448095305728/1572448100515840/STEM/65f9a55b3576440d995e0e4a88d0fd69.png?resizew=96)
更新时间:2016-12-04 00:56:45
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