On Wed, 2005-06-08 at 17:08 +0200, Fredrik Thuring wrote: > Hi! > > Im need a function that solves the equation f(x) = 0 (i.e. the root of > the function) when f is a nonlinear function. Is there any? Ive tried nlm > and optim on the square of the function but the solution is very unstable.
Your colleague Martin Englund asked the same question. If x is scalar, you can use uniroot(). If it's a polynomial then polyroot() finds all the zeros. I hope that helps. Martyn ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
