Question: How to use plots[animate] with RootLocusPlot?


Since this is my first attempt to use plots[animate], please forgive if my question is silly.  

I want to use plots[animate] with RootLocusPlot to show the effect of variable.   Here is my attempt.


Of course, when issuing the commands, an error comes out:  

Error, (in plots/animate) symbolic value(s) in model: a

  • Although I could define sys using NewSystem with a symbolic value, alpha, I have no idea how to assign a value for alpha.  subs(alpha=2,..) does not seem to work.
  • If I remove the square brackets in the second argument of plots[animate], a different msg comes out.  Why do I need (or not) them? 

Many thanks.


Please Wait...