• 2022-06-06
    ​若[img=14x19]1803df6829cd49a.png[/img]是[img=11x14]1803df683329173.png[/img]阶对角矩阵,[img=14x19]1803df683b6d41b.png[/img]、[img=13x19]1803df68441cb2b.png[/img]为[img=11x14]1803df684bea910.png[/img]阶方阵,且[img=78x19]1803df6853f3e30.png[/img],则[img=14x19]1803df685d01bc1.png[/img]也是[img=11x14]1803df68659bb8b.png[/img]阶对角矩阵。‍
  • 举一反三