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Amiga Format CD46 (1999-10-20)(Future Publishing)(GB)[!][issue 1999-12].iso
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glever.1
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1999-09-16
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glever(1) Scilab Function glever(1)
NAME
glever - inverse of matrix pencil
CALLING SEQUENCE
[Bfs,Bis,chis]=glever(E,A [,s])
PARAMETERS
E, A : two real square matrices of same dimensions
s : character string (default value 's')
Bfs,Bis : two polynomial matrices
chis : polynomial
DESCRIPTION
Computation of
(s*E-A)^-1
by generalized Leverrier's algorithm for a matrix pencil.
(s*E-A)^-1 = (Bfs/chis) - Bis.
chis = characteristic polynomial (up to a multiplicative constant).
Bfs = numerator polynomial matrix.
Bis = polynomial matrix ( - expansion of (s*E-A)^-1 at infinity).
Note the - sign before Bis.
Caution
This function uses cleanp to simplify Bfs,Bis and chis.
AUTHOR
F. D. (1988)
SEE ALSO
shuffle, determ, invr, coffg, pencan, penlaur