January 13th, 2008, 01:47 PM
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 | Flow Master | | Join Date: Dec 2007 Location: Zeitgeist
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Quote:
Originally Posted by ris8_allo_zen0  So I have a system of three quadratic equations. Let's say c1, c2, c3 are the cosines of my known angles, and x,y,z the unknown length of segments.
It looks like this:
x^2+y^2+2*x*y*c1=1
z^2+y^2+2*z*y*c2=1
x^2+z^2+2*x*z*c3=2
Is that right? If so, the problem is now how to solve systems of quadratic equations. Which is the best method? I tried with substitution but I get square roots into square roots so I don't think it's the right way. The other methods I know are valid only for linear systems, not quadratic... any clue?
Thanks again! | I haven't checked the equations, but I wasn't expecting thay you'd want exact solutions - approximate solutions using a numerical method are good enough?
__________________ There are two things you should never try to prove: the impossible and the obvious. The greater danger for most of us lies not in setting our aim too high and falling short; but in setting our aim too low and achieving our mark. (Michelangelo Buonarroti)
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