• 2022-05-31
    二次型[img=289x27]1803df7b1826bf6.png[/img]在可逆的线性变换[img=153x71]1803df7b2322439.png[/img]下对应的新的二次型是
    A: [img=144x27]1803df7b2bb306e.png[/img]
    B: [img=128x27]1803df7b34b5bff.png[/img]
    C: [img=136x27]1803df7b3d8802d.png[/img]
    D: [img=128x27]1803df7b46d2ae6.png[/img]