• 2022-07-28
    曲面[img=103x26]1803d45b417cba0.png[/img]在点[img=12x19]1803d45b4a6c11c.png[/img]处的切平面平行于平面[img=146x22]1803d45b52fea40.png[/img],则点[img=12x19]1803d45b4a6c11c.png[/img]的坐标为( ).
    A: [img=69x25]1803d45b6323143.png[/img]
    B: [img=69x25]1803d45b6b68098.png[/img]
    C: [img=55x25]1803d45b73944f2.png[/img]
    D: [img=83x25]1803d45b7c4cd4d.png[/img]