• 2022-06-19
    设有非零向量[img=30x28]18031e8400c29c5.png[/img], 若 [img=42x24]18031e8408dea22.png[/img] 则必有:
    A: [img=123x29]18031e8410db2a1.png[/img]
    B: [img=133x29]18031e8419c6ce1.png[/img]
    C: [img=123x29]18031e842296545.png[/img]
    D: [img=123x29]18031e842a9a9c8.png[/img]