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Message-ID: <20050318141844.77014.qmail@web86908.mail.ukl.yahoo.com> Date: 2005-03-18T14:18:44Z From: Guillaume STORCHI Subject: non-linear model if a and eps are parameters to be fitted X<-nls(y~x+exp(a*x)*eps, data=,start=list(a=,eps=))