Name
coff — resolvent (cofactor method)
Calling Sequence
[N,d]=coff(M [,var])
Parameters
- M
square real matrix
- var
character string
- N
polynomial matrix (same size as M
)
- d
polynomial (characteristic polynomial poly(A,'s')
)
Description
coff
computes R=(s*eye()-M)^-1
for M
a real matrix.
R is given by N/d
.
N
= numerator polynomial matrix.
d
= common denominator.
var
character string ('s
' if omitted)
Examples
M=[1,2;0,3];
[N,d]=coff(M)
N/d
inv(%s*eye()-M)