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coffg.8
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1999-09-16
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coffg(8) Scilab Function coffg(8)
NAME
coffg - inverse of polynomial matrix
CALLING SEQUENCE
[Ns,d]=coffg(Fs)
PARAMETERS
Fs : square polynomial matrix
DESCRIPTION
coffg computes Fs^-1 where Fs is a polynomial matrix by co-factors method.
Fs inverse = Ns/d
d = common denominator; Ns = numerator (a polynomial matrix)
(For large matrices,be patient...results are generally reliable)
EXAMPLE
s=poly(0,'s')
a=[ s, s^2+1; s s^2-1];
[a1,d]=coffg(a);
(a1/d)*a
SEE ALSO
determ, detr, invr, penlaur, glever
AUTHOR
F. D.