• 2022-06-26
    幂级数[img=110x60]1802d00283f151f.png[/img]的和函数为( ).
    A: [img=63x50]1802d0028cefaa1.png[/img]
    B: [img=63x50]1802d002952edde.png[/img]
    C: [img=63x53]1802d0029dfe5c6.png[/img]
    D: [img=63x53]1802d002a65a54d.png[/img]