https://support.apple.com/en-mz/guide/motion/motn176921cd/mac
Curve extrapolation methods in Motion - Apple Support (MZ)
In Motion, you can use curve extrapolation to set the shape of curves before the first and after the last keyframes.
extrapolation methodsin motionapple supportcurvemz
https://scholars.duke.edu/publication/1640809
Scholars@Duke publication: Efficient Beltrami image filtering via vector extrapolation methods
image filteringscholarsdukepublicationefficient
https://arxiv.org/abs/1906.10831
[1906.10831] Improved Extrapolation Methods of Data-driven Background Estimation in High-Energy...
Abstract page for arXiv paper 1906.10831: Improved Extrapolation Methods of Data-driven Background Estimation in High-Energy Physics