From: moonman on
How find DC gain of both G(s) and G(z) . G(s) is transfer function in continuous domain and G(z) in discrete domain.

G(s)= 10(s+1)/(s^2+s+10)

I have calculated G(z) by Matlab
clc
s=tf('s');
G=10*(s+1)/(s^2+s+10)
T=0.01;
G_d=c2d(G,T,'zoh')
grid on
pzmap(G_d);

What he mean by DC gain. How to calculate that in Matlab
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