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| From: | anonymous |
| Subject: | [Octave-bug-tracker] [bug #46566] control 3.0.0: ctranspose of TF function return wrong results |
| Date: | Thu, 24 Mar 2016 18:35:53 +0000 |
| User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:45.0) Gecko/20100101 Firefox/45.0 |
Follow-up Comment #3, bug #46566 (project octave):
For complex numbers j'=-j.
Because s=j*omega (complex number)
(s+1)' =(j*omega+1)'= (j)'*omega+1 = -s + 1
Simple rule: (s)'= -s
(s^2+s+1)'= (-s)^2 -s +1 = s^2-s+1
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