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residuez problem


From: Tarmo Tapio
Subject: residuez problem
Date: Thu, 15 Nov 2018 10:33:54 +0200
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

Hi

Function residuez.m do not work properly (signal pkg)

>> b = [0,1]; a = [3,-4,1]; [R,p,C] = residuez(b,a)
R =

  -0.50000  (should be 0.50000)
   0.50000  (should be -0.50000)

p =

   0.33333  (should be 1.00000)
   1.00000  (should be 0.33333)

[b,a] = residuez(R,p,C)

warning: tolerance ignored
warning: called from
    residuez at line 71 column 5
b = -2  (should be vector)
a = -3  (should be vector)

I'm using xubuntu 18.04 and octave 4.2.2

Tarmo




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