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== Examples ==
=== PT1/lowLow-pass filter step response ===
<!-- {{SyntaxHighlight| -->
{{Code|Creating a transfer function and plotting its response|<syntaxhighlight lang="octave" style="font-size:13px14px">
T1=0.4; # time constant
P=tf([1], [T1 1]) # create transfer function model
[[File:Pt1.png|600px]]
Try also <code style="font-size:14px; border:solid lightgray 1px; padding: 2px">bode(P)</code>!
(a first order low-pass filter has -3db magnitude at f=1/T1)
