Completed Simulations/Control Systems by Nagrath and Gopal/Scilab/Ex7.4.sci


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function y=locus4(z)
s=%s
H=syslin('c',1/(s*(s+4)*(s^2+(4*s)+20)))
evans(H,z)
y=0
printf("Since there are no open loop zeros all branches terminate at infinity")
endfunction