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    %% Root Locus Plot of Dynamic System
% Plot the root-locus of the following system. 
%%
% 
% $$h(s) = \frac{{2{s^2} + 5s + 1}}{{{s^2} + 2s + 3}}.$$
% 
%%

% Copyright 2015 The MathWorks, Inc.

h = tf([2 5 1],[1 2 3]);
rlocus(h)
%%
% You can use the right-click menu for rlocus to add grid lines, zoom in or
% out, and invoke the Property Editor to customize the plot. Also, click
% anywhere on the curve to activate a data marker that displays the gain
% value, pole, damping, overshoot, and frequency at the selected point.