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Why does Inverse[M] hesitate?

  • To: mathgroup at
  • Subject: [mg54370] Why does Inverse[M] hesitate?
  • From: skirmantas.janusonis at (Skirmantas)
  • Date: Sat, 19 Feb 2005 02:32:29 -0500 (EST)
  • Sender: owner-wri-mathgroup at

I'm puzzled by the following in Mathematica 5.0 and 5.1:
If I define a symbolic matrix A and a symbolic matrix B and ask to
calculate Inverse[A].B, the output is the same input operation with
the A and B expanded. I have re-input this output, I finally get the

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