matrix square

• Subject: matrix square
• From: Barton Willis
• Date: Sat, 29 Dec 2012 16:04:59 +0000

> Maxima is unable to solve the system, e.g. for X^^2-ident(2):

Ugh--this is pretty terrible, but I think it's correct.

  (%i25) algsys(flatten(args(matrix([a,b],[c,d])^^2 - ident(2))),[a,b,c]);
  (%o25) [[a=-d,b=-(d^2-1)/%r2,c=%r2]]

--Barton

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