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Re: //MatrixForm

  • To: mathgroup at smc.vnet.net
  • Subject: [mg34428] Re: [mg34409] //MatrixForm
  • From: BobHanlon at aol.com
  • Date: Sun, 19 May 2002 04:14:50 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 5/18/02 4:43:11 AM, stevebg at adelphia.net writes:

>    In Help it says that MatrixForm does not affect
>the interpretation of the expression, but I have
>found differently under certain circumstances.
>    I defined two matrices with and without the
>postfix, and when I multiplied them, the defs
>with the postfix would not multiply out.
>    I'm probably missing something here, and
>would appreciate a little guidance. I can also
>(probably) give examples if needed.
>

Use parens around the definition so that it 
does not include the MatrixForm

(matA = Array[a, {2,2}])//MatrixForm

(matB = Array[b, {2,2}])//MatrixForm

matA.matB

Bob Hanlon
Chantilly, VA  USA


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