• 2022-05-29
    设[img=34x25]1802d000b3efe0d.png[/img]复数形式的傅里叶级数为[img=262x59]1802d000bdd4cb6.png[/img],则其三角形式的傅里叶级数为( ).
    A: [img=286x47]1802d000c89522a.png[/img]
    B: [img=289x49]1802d000d5cfee8.png[/img]
    C: [img=286x49]1802d000e04201b.png[/img]
    D: [img=286x49]1802d000eb576cf.png[/img]