Minimize the sum of the squares of the differences between the two sides: optim(c(1,1), function(x) exp(x[1]-x[2])^2 + log(x[2])^2)
On 3/24/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > hi all > > i have been searching through the archives in search for some help and it > seems > to have been fruitless - thus the mail. i saw some mail relating to mathomatic > and maxima. mathomatic only works for simpel functions - as per the mail and > does not support logs ...- and i am not familiar with maxima. i would > preferably want to use an R function. > > > > is there a function that can solve a system of non linear equations. i dont > have > any data - ie as per nls. > > > > so a trivial example would be: > > exp(a) = v > log(v) = 0 > > > > and we need to solve for v and a. > > hoping someone can help. > / > allan > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
