Trajectory Generation...

I'm working with a model which happens to be an extension of double pendulum system. I need to create ref. trajectories. All I've is position of masses at 3 or 4 different time instants. How can I get trajectories? Is there some function for it?

Answer 1

[Image Analyst]

I was going to ask you the same thing. I assume you have some formula either already in your textbook, or that you're supposed to derive from concepts in your text book. What is that formula, so that we can help you further?