• 2022-06-17
    对x求导[img=91x23]1802f626c0437ab.png[/img]
    A: [img=101x26]1802f626ce21f6c.png[/img]
    B: [img=78x42]1802f626d79f0d0.png[/img]
    C: [img=78x42]1802f626e06b1e6.png[/img]
    D: [img=115x26]1802f626e87b8a4.png[/img]