Bandwidth of transfer function

[Θύμιος Γρίβας]

Hello there,

I want to calculate the bandwidth of a transfer function but i have a problem.

this is my code:

pkg load control

A=tf(20,[1 2 30]);

bandwidth(A)

Of course A is not a matrix and this is a problem.

How can i calculate the bandwidth? I can not find any solution in the internet.

Thank you in advance,

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