[R] nonlinear equation solver?
maj at stats.waikato.ac.nz
Mon Apr 21 07:13:30 CEST 2003
For this equation you are out of luck as log(z) < z for all positive z's
(such as t^2). More generally you should consult a numerical analysis
textbook for advice on the solution of nonlinear equations. There you
will read about many algorithms in common use by statisticians.
Wang, Zhu wrote:
> Dear R-Help,
> I am trying to use R to solve a nonlinear equation many times for different values. I am looking for a mathematical nonlinear equation solution which may not have a closed solution form. For example, I have equation:
> 2 = (t^2)/log(t)
> What is t?
> I am wondering how to solve it in R.
> Many thanks,
> Zhu Wang
> Statistical Science Department
> R-help at stat.math.ethz.ch mailing list
Dr Murray Jorgensen http://www.stats.waikato.ac.nz/Staff/maj.html
Department of Statistics, University of Waikato, Hamilton, New Zealand
Email: maj at waikato.ac.nz Fax 7 838 4155
Phone +64 7 838 4773 wk +64 7 849 6486 home Mobile 021 1395 862
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