lcmdiag
least common multiple diagonal factorization
Syntax
[N,D] = lcmdiag(H) [N,D] = lcmdiag(H, 'row') [N,D] = lcmdiag(H, 'col')
Arguments
- H
rational matrix
- N
polynomial matrix
- D
diagonal polynomial matrix
- 'row'|'col'
character string: Default is
'col'.
Description
[N,D]=lcmdiag(H,'row') computes a factorization D*H=N,
i.e. H=D^(-1)*N where D is a diagonal matrix with D(k,k)=lcm of
kth row of H('den').
[N,D]=lcmdiag(H) or [N,D]=lcmdiag(H,'col) returns
H=N*D^(-1) with diagonal D and D(k,k)=lcm of kth col of H('den')
Examples
s = poly(0,'s'); H = [1/s,(s+2)/s/(s+1)^2;1/(s^2*(s+2)),2/(s+2)]; [N,D] = lcmdiag(H); N/D - H
See also
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