File: coffg.man

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.TH coffg 8 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an 
.SH NAME
coffg - inverse of polynomial matrix
.SH CALLING SEQUENCE
.nf
[Ns,d]=coffg(Fs) 
.fi
.SH PARAMETERS
.TP
Fs
: square polynomial matrix
.SH DESCRIPTION
\fVcoffg\fR computes \fVFs^-1\fR where \fVFs\fR is a polynomial
matrix by co-factors method.
.LP
\fVFs\fR inverse = \fVNs/d\fR
.LP
\fVd\fR = common denominator; \fVNs\fR =  numerator (a polynomial matrix)
.LP
(For large matrices,be patient...results are generally reliable)
.SH EXAMPLE
.nf
s=poly(0,'s')
a=[ s, s^2+1; s  s^2-1];
[a1,d]=coffg(a);
(a1/d)-inv(a)
.fi
.SH SEE ALSO
determ, detr, invr, penlaur, glever
.SH AUTHOR
F. D.