• 2022-06-29
    已知曲面[img=118x26]1803b307671cbf8.png[/img]上点[img=18x19]1803b3076fb073b.png[/img]处的切平面平行于平面[img=123x22]1803b30778266e3.png[/img],则点[img=18x19]1803b3076fb073b.png[/img]的坐标是( )
    A: [img=74x25]1803b30788189b7.png[/img]
    B: [img=69x25]1803b3079032acf.png[/img]
    C: [img=74x25]1803b30797c3b21.png[/img]
    D: [img=55x25]1803b3079f1dee8.png[/img]
  • 举一反三