Custom animation function - possible?

[me2 beats]

Is there a way to combine various built-in functions for animations or even create custom functions?
I like the following functions:

in_out_cubic

in_out_quad

in_out_sine

But I want to make something like:

in_cubic_out_sine

and see if it will be nice.

It's also interesting to experiment with other math functions, for example, to create various effects.

How can this be done in kivy?