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From: "Tao Shen" <tshen@mathworks.com>
Newsgroups: comp.soft-sys.matlab
Subject: How to solve XA + B = 0?
Date: Thu, 2 Jul 2009 12:35:16 -0400
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Hello all,

I need to solve a equation which is XA + B =0. It is a least squares 
problem.

The X is a 2*N matrix, A is N*2, and B is 2*2. Because A is N*2, it seems we 
can't find its right inverse matrix but only left inverse matrix. However it 
is not useful in this case.

Is there any method to solve this problem?

Thanks in advance!