• 2022-06-26
    幂级数[img=169x60]1802d00a85f3e4c.png[/img]的和函数为( ).
    A: [img=66x52]1802d00a8f3a839.png[/img]
    B: [img=63x46]1802d00a980e664.png[/img]
    C: [img=63x46]1802d00aa0af24d.png[/img]
    D: [img=63x50]1802d00aa977ba9.png[/img]