F-Curve stands for “Ferguson’s Parametric Cubic Curves.”

[Parker Bourassa]

https://blender.stackexchange.com/questions/52403/what-is-the-mathematical-basis-for-f-curves
In short, they are functions, like “f(x) = 2y” and can’t have two values for the same frame so I’ll call them “function curves” in my head.

Thanks for the great lesson!

[Wayne Dixon]

Thanks Parker.
Now I know, I can stop thinking they are “friendly” curves haha

[Author]

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