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Intersection of Conic Sections

  • To: mathgroup at
  • Subject: [mg66277] Intersection of Conic Sections
  • From: "irchans" <infinitgames at>
  • Date: Sat, 6 May 2006 23:50:40 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

This seems like a simple question, but I am finding it diffucult to
find a simple solution.

What are the points of intersection of

0 = A1 + A2*x + A3*y + A4*x^2 + A5*x*y + A6*y^2


0 = B1 + B2*x + B3*y + B4*x^2 + B5*x*y + B6*y^2

where Ai and Bi are constants.

When I solve this with mathematica, I get a rather complex expression.
Is there a simple algorithm that finds all the roots?


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