• 2022-06-29
    设[img=35x23]1802fee25d6da59.png[/img]为[img=11x14]1802fee266113da.png[/img]阶矩阵,则下列矩阵为对称矩阵的是( ).
    A: [img=37x23]1802fee26e920c1.png[/img]
    B: [img=52x23]1802fee276f7488.png[/img]
    C: [img=58x25]1802fee28023930.png[/img]
    D: [img=68x25]1802fee28928752.png[/img]