Earlier Peras sample material
Chain Rule: First Principles
A public excerpt of earlier Peras-generated sample material about the chain rule.
We've seen cases where a function sits inside another function, each transforming the output of the previous one. When we take the derivative of such a composition, we're no longer just asking how output changes with input. We're asking how a small nudge in the initial input ripples all the way through both machines to affect the final output.