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see nlm or optim Justin BEM Elève Ingénieur Statisticien Economiste BP 294 Yaoundé. Tél (00237)9597295. ----- Message d'origine ---- De : Wayne Delport <wdelport@botzoo.uct.ac.za> À : r-help@stat.math.ethz.ch Envoyé le : Vendredi, 8 Décembre 2006, 8h27mn 44s Objet : [R] formula format for parameter estimation Hello, I am trying to input the following formula into R for parameter estimation. I don't quite have the just of formula syntax. I understan...

Hello, I am trying to input the following formula into R for parameter estimation. I don't quite have the just of formula syntax. I understand simple basic regression (y ~ x), but how do I do the ff: y = ( b0*x )/(x + b1), where b0 and b1 are parameters that need to be solved. Any help/suggestions for a newbie would be much appreciated. thanks ./w Wayne Delport Molecular Ecology and