跟住個dot或cross或乜都冇又唔同
可否清楚列下
▽vector
▽scalar
▽.vector
▽.scalar
▽x vector
▽x scalar
等如乜(如果有)
更新1:
同埋▽^2又係乜? 係cross兩次定dot兩次? 好亂呀!!!
同埋▽^2又係乜? 係cross兩次定dot兩次? 好亂呀!!!
收錄日期: 2021-04-23 23:27:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130303000051KK00030