Re: eigenvectors

[heberf]

Ahh, I'd forgotten about the eig function.  I was looking in the help
under matrix factorizations and eig wasn't listed.  It's under basic
matrix functions.

Thanks,

On Wed, 9 Jun 1999, Nimrod Mesika wrote:

> address@hidden wrote:
> > 
> >         Q = inv(X)*D*X
> > 
> use   [X,D] = eig(Q);
> 
> D is a diagonal matrix (the elements are the eigenvalues of Q: lambda1,
> lambda2, etc..).
> X is a matrix of eigenvectors.
> 
> Actually, since octave returns X as a unitary matrix (a matrix for which
> inv(A)=A') you also have the simpler expression:
> 
> Q = X' * D * X;
> 
> -- Nimrod.
> 




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