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MathGroup Archive 2004

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Re: Slow LinearSolve.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg49661] Re: Slow LinearSolve.
  • From: Giorgos Momferratos <mc01627 at mail.ntua.gr>
  • Date: Tue, 27 Jul 2004 07:00:37 -0400 (EDT)
  • References: <ce2gcm$8tu$1@smc.vnet.net>
  • Reply-to: mc01627 at mail.ntua.gr
  • Sender: owner-wri-mathgroup at wolfram.com

Aaron Fude wrote:

>  Hi,
>  
>  Within 24 hours and counting, Mathematica was not able to solve Ax = b
>  for the following A and the following B. Another system does this in a
>  matter of seconds. How do make Mathematica do the same? I use
>  "LinearSolve[A, b]"
>

I guess this is because you request a symbolic solution. 
LineaeSolve[N[A], N[b]] comes in seconds.


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