[R] Symbolic eigenvalues and eigenvectors

[Gabor Grothendieck]

Eigenvalues are not directly supported by the Ryacas interface but you
can send this directly to yacas like this:

> yacas("EigenValues({{Cos(x), -Sin(x)}, {Sin(x), Cos(x)}})")
[1] "Starting Yacas!"
expression(Roots((cos(x) - xx)^2 + sin(x)^2))


On Tue, May 4, 2010 at 8:54 PM, John Mesheimer <john.mesheimer at gmail.com> wrote:
> Let's say I had a matrix like this:
>
> library(Ryacas)
> x<-Sym("x")
> m<-matrix(c(cos (x), sin(x), -sin(x), cos(x)), ncol=2)
>
> How can I use R to obtain the eigenvalues and eigenvectors?
>
> Thanks,
> John
>
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