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Cannot solve 3x3 Eigensystem

  • To: mathgroup at
  • Subject: [mg68590] Cannot solve 3x3 Eigensystem
  • From: kdittmer <kdittmer at>
  • Date: Fri, 11 Aug 2006 04:39:54 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

The result of

FullSimplify[Eigensystem[{{a1, b1, 0}, {b1, a2, b2}, {0, b2, a3}}, 
Cubics-> True], {b1, b2, a1, a2, a3} \[Element] Reals]

is unfortunately containing Root[].

How do i get my exact solution?

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