plot absolute frequency response

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arash rad
arash rad 2021-6-9
hi
I have this code
clc
clear all
close all
s = tf('s');
t1 = 1;
pade1 = (1-((s*t1)/2))/(1+((s*t1)/2))
t2 = 0.3;
pade2 = (1-((s*t2)/2))/(1+((s*t2)/2))
t3 = 1.8;
pade3 = (1-((s*t3)/2))/(1+((s*t3)/2))
t4 = 0.35;
pade4 = (1-((s*t4)/2))/(1+((s*t4)/2))
G = [(-21.6*pade1)/(8.5*s+1) (1.26*pade2)/(7.05*s+1);...
(-2.75*pade3)/(8.2*s+1) (-4.28*pade4)/(9.0*s+1)]
G_hat = inv(G)
RGA = (G.*(G_hat)')
and I want to plot a frequency response for RGA(1,1)
and i want to plot absolute magnitude of this tf
can anyone help me
Thank you

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