least common multiple diagonal factorization
[N,D]=lcmdiag(H) [N,D]=lcmdiag(H,flag)
rational matrix
polynomial matrix
diagonal polynomial matrix
character string: 'row'
or 'col'
(default)
[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')
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 | ![]() | ![]() |