Dear meng, Check I understood correctly, the Ryacas package might do what you want. Check its vignette at http://cran.r-project.org/web/packages/Ryacas/vignettes/Ryacas.pdf
Best, Jorge.- On Fri, Jan 4, 2013 at 5:59 PM, meng <> wrote: > Hi all: > I have a question about the computation of expression: > y = 1+(2x1+2)-3*(5x1-1)+(3x2+3)-2*(x2-1) > > The result of y is: > y = 11-13x1+x2 > > How can I compute the result of y via R function? > > Many thanks! > > My best. > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.