To explain the above sentence, I found following computation from {moderator edit: link and image removed}

But I still can`t understand how that backward propagation thing works to compute the derivative

To explain the above sentence, I found following computation from {moderator edit: link and image removed}

But I still can`t understand how that backward propagation thing works to compute the derivative

Iโm deleting the link from your post, since it is distributing the course materials without permission. Thatโs not allowed by the course honor code.