apply the inverse kinematic tranformation?

[kinganu123]

so ive been tryna figure out my own mecanum drive algorithim and i searched a few threads for hints and I noticed that people have mentioned applying the inverse kinematic transformation when you have the x, y, and twist values to get the individual motor speeds. I was wondering what on earth is the inverse kinematic transformation and how i would use it to figure out each individual motor speed from these. It would be appreciated the chief delphi community could explain this without giving me the actual algorithims for each wheel speed in mecanum drive