Plot f(x) = x^(1/5)

wrote:

Try this:

 y <- sign(x) * abs(x)^(1/5)

On Tue, May 17, 2016 at 8:44 AM, Steven Stoline <sstoline at 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
sstoline at gmail.com

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