R help - Oct 2009 - matrix^(-1/2)

Dear R-Help Team,

as a R novice I have a (maybe for you very simple question), how do I get
the following solved in R:

Let R be a n x n matrix:

\mid R\mid^{-\frac{1}{2}}

solve(A) gives me the inverse of the matrix R, however not the ^(-1/2) of
the matrix...

Thank you very much in advance!

Best regards,

Kajan Saied

	[[alternative HTML version deleted]]

On Oct 31, 2009, at 4:39 PM, Kajan Saied wrote:
> Dear R-Help Team,
>
> as a R novice I have a (maybe for you very simple question), how do  
> I get
> the following solved in R:
>
> Let R be a n x n matrix:
>
> \mid R\mid^{-\frac{1}{2}}
>
> solve(A) gives me the inverse of the matrix R, however not the  
> ^(-1/2) of
> the matrix...
GIYF: (and Bill Venables if friendly, too.)

http://www.lmgtfy.com/?q=powers+of+matrix+r-project

-- 

David Winsemius, MD
Heritage Laboratories
West Hartford, CT