A . (1,-1,2)
B . (1,1,2)
C . (-1,1,2)
D . (-1,-1,2)
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,
[单选题]已知曲面z=4-x2-y2上点P处的切平面平行于平面2x+2y+z-1=0,则点P的坐标是( )。A.(1,-1,2)B.(-1,1,2)C.(1,