https://www.khanacademy.org/math/precalculus-essentials/xb09485e87636188c:composite-and-inverse-functions 2026-06-30T17:30:43.834984468Z Composite and inverse functions We can compose functions by making the output of one function the input of another one. This simple-yet-rich idea opens up a world of fascinating applications. Inverse functions undo each other when we compose them. unit