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.