Howdy,
I don't know if you're still looking for a solution, or if the one provided works, and maybe I don't understand your question, but I've had to generate log spaced points to plot frequency responses, and the way I do it is as follows:
pts:=(enter how many points you want)
n:=1..pts...
Hi,
I think you could write the differential equation in Mathcad and use the solve capability. I've done this before, but it's been a while.
Good luck.
An excellent, easy to read book that sticks to the practical aspects of control systems is by Raymond Jacquot, "Modern Digital Control Systems." (I am pretty sure that is the exact title, and I'm positive that is the author's name).
Another is B.C. Quo's book, the title of which I think is...