• 2022-06-26
    ​下列矩阵中,( )是简化阶梯形矩阵.‏​ ‏
    A: [img=111x63]1802ce6880bfa8c.png[/img]
    B: [img=111x63]1802ce688e0880b.png[/img]
    C: [img=114x83]1802ce689894417.png[/img]
    D: [img=114x83]1802ce68a43a901.png[/img]