This note is mostly to collect backlinks, although I'm not sure why. **Derivative** has 2 meanings: 1. **Plain English** - something new that is based on or the result of something pre-existing. 1. I use this term a lot in the context of a [[Version Control]]led *snapshot* of a living artifact (e.g. [[Enterprise Architecture Artifacts]]) being a *derivative* of the living artifact that's been vetted for a particular use at a particular time. 2. Requirements can also be derivatives of other requirements. 2. **Mathematics** - the instantaneous rate of change. [[Fundamental Theorem of Calculus]] says that derivatives are the inverse of integrals.[^1] **** # More ## Source - self [^1]: interestingly I just realized that "integral" is *also* a plain english word, and it's a plain english word that has about the same level of use and relative obscurity as the word "Derivative" in plain english. Odd. **WHOA ODD IS A MATH TERM TOO HOW DEEP DOES THIS RABBIT HOLE GO?!**