How many controllers should be plotted for problem 3c?

From MurrayWiki

Q How many controllers should be plotted for problem 3c?

A You want to contrast the effect on the step response from varying ρ for two fixed q₁ values, so constrasting requires you pick at least two values of ρ for these plots. In addition, contrast the effect on step response from varying q₁ for at least two fixed values of ρ.

If you use subplot to display the x and θ step response in a single figure, you can do the above contrast within four figures.

--John