• 2022-06-29
    函数[img=96x25]180387cd90d6abc.png[/img]的傅里叶级数为()
    A: [img=192x60]180387cd9bc07f7.png[/img]
    B: [img=203x60]180387cda86dbd1.png[/img]
    C: [img=189x60]180387cdb33a49e.png[/img]
    D: [img=203x60]180387cdbe50642.png[/img]