MATLAB: Factoring a symbolic matrix

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hi,
I've a symbolic matrix as following :
[s/((s^2 + w1^2)*L), w1/((s^2 + w1^2)*L); (-w1)/((s^2 + w1^2)*L), s/((s^2 + w1^2)*L)]
how can I factorize statement : 
(s^2 + w1^2)*L
from all elements?
thx

Best Answer

The expression appears in the denominator of all the elements of the matrix, so just multiply it: 
syms s w1 L 
Eq = [s/((s^2 + w1^2)*L), w1/((s^2 + w1^2)*L); (-w1)/((s^2 + w1^2)*L), s/((s^2 + w1^2)*L)];
Eqf = Eq * (s^2 + w1^2)*L
producing: 
Eqf =
[   s, w1]
[ -w1,  s]
Another option is: 
[n,d] = numden(Eq)
producing: 
n =
[   s, w1]
[ -w1,  s]
d =
[ L*(s^2 + w1^2), L*(s^2 + w1^2)]
[ L*(s^2 + w1^2), L*(s^2 + w1^2)]
.
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