• 2022-06-29
    函数[img=96x25]180357abdc0ed0b.png[/img]的傅里叶级数为()
    A: [img=192x60]180357abe622aa6.png[/img]
    B: [img=203x60]180357abf09f183.png[/img]
    C: [img=189x60]180357abfb77be9.png[/img]
    D: [img=203x60]180357ac0669c51.png[/img]