% Nise, N.S.
% Control Systems Engineering, 6th ed.
% John Wiley & Sons, Hoboken, NJ, 07030
% Control Systems Engineering Toolbox Version 6.0
% Copyright 2011 by John Wiley & Sons, Inc.
% TryIt 13.3
% Use MATLAB, the Control System Toolbox, and the
% following statements to solve Skill-Assessment
% Exercise 13.8.
% Note: When the root locus appears, click on
% the intersection of the 0.5 damping ratio
% curve and the root locus to calculate the gain.