I wrote this for myself to understand the Leibniz notation. Prerequisites for this post are the definition of the derivative and the Lagrange notation. If you don’t understand these yet, please study them first. So… You may have already seen something like dydxdxdy. This is called the Leibniz notation. The Leibniz notation has many of what Spivak calls“vagaries”. It has multiple interpretations– formal and informal. The informal interpretation doesn’t map to modern mathematics,...
