https://support.apple.com/en-ke/guide/motion/motn176921cd/mac
Curve extrapolation methods in Motion - Apple Support (KE)
In Motion, you can use curve extrapolation to set the shape of curves before the first and after the last keyframes.
extrapolation methodsin motionapple supportcurveke
https://repository.lib.ncsu.edu/items/26b189bf-a839-428e-8a62-4c7c275a688f
Methods for Extrapolation Detection and Sequential Design and Analysis.
methodsextrapolationdetectionsequentialdesign