Dear Gabor: many thanks,makes it.
steve On Tue, May 17, 2016 at 9:07 AM, Gabor Grothendieck <ggrothendi...@gmail.com > wrote: > Try this: > > y <- sign(x) * abs(x)^(1/5) > > On Tue, May 17, 2016 at 8:44 AM, Steven Stoline <sstol...@gmail.com> > wrote: > > Dear All: > > > > > > I am trying to plot the function f(x) = x^(1/5) for x=seq(-2,2,0.01). It > > give me only the plot of f(x) for the positive part of x. I checked the > > values of f(x), it is NaN for all negative values of x. > > > > *this is my code:* > > > > > > x<-seq(-2,2,0.01) > > y<- (x)^(1/5) > > plot(x,y, type="l", lwd=3, xlab = " ", ylab = " ", col="blue") > > abline(v=0, col="gray", lty=2, lwd=3) > > abline(h=0, col="gray", lty=2, lwd=3) > > > > > > > > any help will be appreciated. > > > > > > with many thanks > > steve > > -- > > Steven M. Stoline > > 1123 Forest Avenue > > Portland, ME 04112 > > sstol...@gmail.com > > > > [[alternative HTML version deleted]] > > > > _______________________________________________ > > R-sig-teaching@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-sig-teaching > > > > -- > Statistics & Software Consulting > GKX Group, GKX Associates Inc. > tel: 1-877-GKX-GROUP > email: ggrothendieck at gmail.com > -- Steven M. Stoline 1123 Forest Avenue Portland, ME 04112 sstol...@gmail.com [[alternative HTML version deleted]] _______________________________________________ R-sig-teaching@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-teaching