1. <u,v>
2 ||u||
3. ||v||
4.d (u,v)
u=(-4,3) v=(0,5) <u,v> = 3u1v2 + u2v2
更新1:
= 3u₁v ₁+ u₂v ₂
= 3u₁v ₁+ u₂v ₂
收錄日期: 2021-04-30 15:05:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100625000016KK00149