2012/10/28 Rhys Ulerich <[email protected]> > > Can you please suggest a fast GSL method / algorithm to find the > solutions > > of a quadratic 3d system of algebraic equations? > > > > In the reduced form all 3 equations have zero on the l.h.s., and on the > > r.h.s. there are constant, linear and quadratic terms composed of x1, x2, > > x3 (the three variables). > > Newton iteration, especially if you provide analytic Jacobian, should do > well here. There may be faster things that can return multiple solutions, > however. > > - Rhys >
Thanks, I've chosen the hybrid algorithm<http://www.gnu.org/software/gsl/manual/html_node/Example-programs-for-Multidimensional-Root-finding.html> . Illes
