正在回复 "老师，b站的3.3.2视频课，我问下这里代码的具体意思能讲讲吗，视频课听了好几遍都没太懂这里面数学的公式为啥这样写"
Hello👋!
This forum uses a post queue system, since you are a new user your post will be hidden until it is approved by our moderation team.
This forum uses a post queue system, since you are a new user your post will be hidden until it is approved by our moderation team.