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MathGroup Archive 1999

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Re: Inverting a non-square matrix

  • To: mathgroup at
  • Subject: [mg20231] Re: Inverting a non-square matrix
  • From: Jens-Peer Kuska <kuska at>
  • Date: Fri, 8 Oct 1999 18:30:12 -0400
  • Organization: Universitaet Leipzig
  • References: <7tgr12$>
  • Sender: owner-wri-mathgroup at


a non square matrix has no inverse ! So you can't calculate it
even with Mathematica.  If the SingularValues[] function of Mathematica
can help you depends on your problem.


Nicolas Bardou wrote:
> Hi all,
> I learnt a bit of Mathematica when I was student and I need a formal
> calculation of the inverse of a non square matrix. But we do not have
> the software in my department.
> Can anyone say me if it is possible, and what are the formulas?
> My matrix is:
> A =
> [a b c d]
> [e f g h]
> [i j k l]
> and all the parameters are variable.
> Thank you by advance!

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