• 2022-06-07
    ‏两个矩阵[img=14x19]1803df68e18ecc8.png[/img]和[img=14x19]1803df68e96af49.png[/img],如果秩([img=14x19]1803df68f218ed2.png[/img])等于秩([img=14x19]1803df68facb418.png[/img]),那么[img=14x19]1803df6902b03b8.png[/img]与[img=14x19]1803df690af740f.png[/img]等价。‏
  • 举一反三