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clc;
syms K s a;
G = K/(s*(s+a));
E = (1/s^2)/(1+G);
e = limit(s*E,s,0);
e = simple(e);
disp(e,"steady state error = ");
sea = (a/e)*diff(e,a);
sek = (K/e)*diff(e,K);
sea = simple(sea);
sek = simple(sek);
disp(sea,"sensitivity of error wrt parameter a = ");
disp(sek,"\n sensitivity of error wrt parameter K =");
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