Hello @frederik ! Thank you! it works for me
May I add those few lines found on this other tutorial about "EaseInOut" function.

def easeInOut(factor):
    assert 0 <= factor <= 1
    return (1 - cos(factor * pi)) / 2

It will add a new graph with easeInOut. It is working well with your previous lines. Thank you for your help ! Be safe.

@frederik thank you for this examples, it help a lot. I am looking for an "Cubic" Ease In & Out function to make my animation smoother. But I can't figure how to set it as your example shows. Here is the motion, I have applied EaseIn in both ways. Thank you again for your help with the three Easing example