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)
Examples
s=poly(0,'s')
a=[ s, s^2+1; s s^2-1];
[a1,d]=coffg(a);
(a1/d)-inv(a)