On Sep 28, 2009, at 6:22 PM, Dmitry Gospodaryov wrote:
Does exist any tool in R to solve equations, especially complex
exponential equations?
For example:
y = 100*exp(b*(1-exp(c*x))/c)
If it is so, then what is the package i have to
use and what is algorythm for this solving?
Thank you for advance.
With regard, Dmitry.
You want an analytical solution of 100*exp(b*(1-exp(c*x))/c) = 0 in
terms of b and c?
library(Ryacas) # perhaps
Or do you want to specify b and c and get a numerical solution?
?uniroot
?polyroot
Or find the minimum of y?
?nlm # and others mentioned on that page.
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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