By ~= 0 I mean approximately singular. It is singular up to my level
of tolerance.
Thanks for the suggestion,
G.R.
On 2/23/07, *Quentin Spencer* <address@hidden
<mailto:address@hidden>> wrote:
lipschitz82 wrote:
> I need to calculate the vector s.t. Ax = 0, for det(A) ~= 0. I've
> looked at the documentation, octave-forge, etc. but I couldn't
find a
> routine for doing this. Matrix A is pretty big, ie. in the
hundreds,
> but I also have a lot of computer time if the available routine
is slow.
Your subject line says A is singular, but your description of the
problem says det(A)~=0, which means it is not singular, so which
is it?
Assuming A is singular, the "null" function will compute a set of
basis
vectors for the null space of A.
Quentin