[R] extraction of roots in R
dmck at u.washington.edu
Fri Nov 1 19:20:58 CET 2013
If you just want the nth root of X, use X^(1/n)
> x <- 256
> x <- -256
It appears that you get the positive real root.
Is this all you wanted?
On 1-Nov-13, at 11:11 AM, Gary Dong wrote:
> Dear R users,
> I wonder if R has a default function that I can use to do
> extraction of
> Here is an example:
> X N
> 2.5 5
> 3.4 7
> 8.9 9
> 6.4 1
> 2.1 0
> 1.1 2
> I want to calculate Y = root(X)^N, where N represents the power.
> what is
> the easy way to do this?
> Thank you!
> [[alternative HTML version deleted]]
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-
> and provide commented, minimal, self-contained, reproducible code.
Pacific Wildland Fire Sciences Lab
US Forest Service
School of Environmental and Forest Sciences
University of Washington
dmck at uw.edu
More information about the R-help