I have been trying to get the Ryacas package to work without any success. I do not seem to be able to the "Sym" function work, for example:
> library(XML) > library(Ryacas) > a=Sym("a") > a Error in summary.connection(x) : invalid connection I am windows XP with R 2.10 Thanks for you help gavin amw steininger ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.