• 2022-06-30
    ‎求曲面[img=145x26]1803bbf90e6a536.png[/img]上点(2,2,3)处的切平面为( )‌
    A: [img=154x22]1803bbf91709cc1.png[/img]
    B: [img=154x22]1803bbf9200ba97.png[/img]
    C: [img=154x22]1803bbf929b077b.png[/img]
    D: [img=154x22]1803bbf93222e88.png[/img]