fxsin4x的精选

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 函数f(x)=sin4x是                                         ...

 函数f(x)=sin4x是                                         ...

2021-09-01
问题详情： 函数f(x)=sin4x是                                                        （  ）A.周期为π的偶函函     B. 周期为π的奇函数C.周期为的...