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how to describe the magnitude of a transfer function

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yfluo2004

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Hi,

Currently I am trying to write a code in Matlab to calculate the magnitude response of a combination of some transfer functions for example, as follows:

assume
H(s)=1/(s^2+3s+2);
Y(s)=1/(2s^2+5s+3);
then, I want to know the magnitude response of
G(s)=Y(s)*|H(s)|^2;

Could anyone tell me how to describe the absolute value of power of 2 of a transfer function such as |H(s)|^2 in Matlab.

Thanks a lot.

YLuo
 

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