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clc;
s = %s;
G = s^8+s^7+12*s^6+22*s^5+39*s^4+59*s^3+48*s^2+38*s+20;
x = routh_t(G);
disp(x);c = 0;
for i = 1:length(coeff(G))
if(x(i,1)<0)
c=c+1;
end
end
if(c>=1)
printf("poles in RHP,thus unstable");
else printf("stable system") ;
end
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