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Limit of matrix size when using AppendRows

• To: mathgroup@smc.vnet.net
• Subject: [mg10857] Limit of matrix size when using AppendRows
• From: ifby547@ccwf.cc.utexas.edu (John V. Fernandez)
• Date: Wed, 11 Feb 1998 18:32:28 -0500
• Organization: The University of Texas at Austin

Howdy,

I am trying to run a small program which solves a system of  equations.
In the program, AppendRows does not seem to  work (but works with
smaller sized matrices). Could size really be the problem? I have
inserted the code below.

Thanks,
John Fernandez


<<LinearAlgebra`MatrixManipulation`;
A={{-16,-8,0,0,0,0,0,0},{-8,14,-8,1,0,0,0,0},{0,-8,16,-8,0,0,0,0},{0,1,-8,
     
14,-8,1,0,0},{0,0,0,-8,16,-8,0,0},{0,0,0,-1,-8,14,-8,1},{0,0,0,0,0,-8,
      16,-8},{0,0,0,0,0,-1,-8,7}};
MatrixForm[A]
RowReduce[A]//MatrixForm
B={{4000},{2000},{4000},{2000},{4000},{2000},{4000},{2000}}//MatrixForm
C=AppendRows[A,B]
RowReduce[C]