• 2022-06-26
    幂级数[img=110x60]1802d00f0e52f6d.png[/img]的和函数为( ).
    A: [img=63x50]1802d00f170d369.png[/img]
    B: [img=63x50]1802d00f203ff9a.png[/img]
    C: [img=63x53]1802d00f292018c.png[/img]
    D: [img=63x53]1802d00f3194630.png[/img]