9-3-16 When your notes go from racing-to-keep-up-with-your-professor to Grade A Study Quality 😎👌🏼
(RE requests to your blog.) A while ago after I'd taken a few years of Calculus (nothing too advanced), I was frustrated at the vague and ambiguous definitions of "differentials" (dx, dy). I learned from the literature that it IS somewhat of an illusive concept. Another mystery that I was on a quest to understand was the "physical manifestation" of composite functions and the Chain Rule. HOW they work on a deep level. I halted my research in the middle but may return some day. Do these appeal?