
From:  lipschitz82 
Subject:  Re: A * x = 0 for singular matrix 
Date:  Fri, 23 Feb 2007 15:40:47 0800 
lipschitz82 wrote:
> I need to calculate the vector s.t. Ax = 0, for det(A) ~= 0. I've
> looked at the documentation, octaveforge, 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
[Prev in Thread]  Current Thread  [Next in Thread] 