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Re: How to choose real positive solutions?
soln = NSolve[eqns, x]; Select[soln,FreeQ[x/.#,Complex]&&(x/.#)>0&] Bob Hanlon ---- mandix <mdix at tulane.edu> wrote: > Hi, > suppose I want to solve a system of 3 equations and 3 unknowns > (polynomial of degree whatever, say n). Is there a way to tell NSolve > to return only real and positive solutions (and ignore the rest)? > > thanks you so much, > > Manfred