1499/CH2/EX2.9/q9_impulse.sce


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s=%s; // first create a variable
num=2*s+1;
den=s^2;
TF=syslin('c',num,den)

t=linspace(0,5,500);
imp_res=csim('imp',t,TF);
plot(t,imp_res)
xgrid()
xtitle('Impulse response','time','response');