How to find the limit of a transfer function defined using tf?

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I defined a transfer function using:
>> sys1=tf([20 20],poly([-4 -3]))
sys1 =
20 s + 20
s^2 + 7 s + 12
now i want to find its limit s->0, how do i do this?
tried using limit(sys1) but it didnt accept it

Accepted Answer

Serhii Tetora
Serhii Tetora on 23 Jul 2020
sys1=tf([20 20],poly([-4 -3]));
[Num,Den] = tfdata(sys1,'v');
syms s
lim = limit(sys_syms,s,0)

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