• 2022-05-30
    求向量[img=97x25]180381aae5d3a70.png[/img]在向量[img=87x28]180381aaef2c8ef.png[/img]上的投影.
    A: 2
    B: [img=25x47]180381aaf7e7fe1.png[/img]
    C: [img=18x43]180381ab00b9f28.png[/img]
    D: [img=25x47]180381ab09a435d.png[/img]
  • 举一反三