% Problem 7.5
A=[-0.0546 0  0.5435
    1      0  0
    0      0 -1.55];

B=[0; 0; 1.55];

C=[0 1 0];

D=0;

[num,den]=ss2tf(A,B,C,D,1)
for j=1:length(num),
    if abs(num(j)) < 1.e-10
       num(j)=0;
    end
end
[p,z]=pzmap(num,den)

rlocus(num,den)
axis([-2 0.5 -1 1])
grid


