Message-ID: <23623227.post@talk.nabble.com>
Date: 2009-05-19T19:52:20Z
From: deanj2k
Subject: what is wrong with this code?
dlogl <- -(n/theta)-sum((y/(theta)^2)*((1-exp(y/theta))/(1+exp(y/theta)))
d2logl <- (n/theta^2) - sum((-2y/theta^3)*(1-exp(y/theta))/(1+exp(y/theta)))
- sum(((2*y/theta^4)*exp(y/theta))/((1+exp(y/theta))^2))
returns the error message:
Error: unexpected symbol in:
"dlogl <- -(n/theta)-sum((y/(theta)^2)*((1-exp(y/theta))/(1+exp(y/theta)))
d2logl"
do you know what i have done wrong
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