% Demo of pole at s = -2
% R. Kozick

k = linspace(-4, 2, 101);
K = ones(101,1) * k;
s = j*K + K';
h = 1 ./ (s+2);
mesh(k, k, abs(h))
xlabel('Real(s)')
ylabel('Imag(s)')
zlabel('1/|s+2|')

