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若为上的奇函数,且满足,对于下列命题: ①; ②是以4为周期的周期函数; ③的图...

6ec8aac122bd4f6e6ec8aac122bd4f6e上的奇函数,且满足6ec8aac122bd4f6e,对于下列命题:

6ec8aac122bd4f6e;                                    

6ec8aac122bd4f6e是以4为周期的周期函数;

6ec8aac122bd4f6e的图像关于6ec8aac122bd4f6e对称;           

6ec8aac122bd4f6e

其中正确命题的序号为                                                                                    (    )

A.①②                B.①②④          C.①②③               D.②③④

 

B 【解析】略
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