s domain to complex domain?

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Muhammad
Muhammad 2021-9-10
回答： Paul 2021-9-10
clc
clear all
A=[-0.0295 0.0478 0 -9.81;-0.1777 -1.4411 120 0;0.0005 -0.033 -1.5345 0;0 0 1 0]
B=[0;-12.81;-6.59;0]
C=[0 0 0 1]
D=[0]
[num ,dem]=ss2tf(A,B,C,D)
[z,p,k]=tf2zp(num,dem)
t=linspace(0,100,100)
sys=tf(num,dem)
i want this system in 's' domian to change into complex domain simply by subsituting 'jw' in place of 's' where 'w=0.1 rad/s'
then i want the magnitude of that complex domain can i do it in matlab

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Paul
Paul 2021-9-10
Some functions that may be of interest:
doc freqresp
doc abs

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