Date: Feb 27, 2008 9:07 PM
Author: John D'Errico
Subject: Re: eigenvector
dofour <dofour@hotmail.com> wrote in message

<12272363.1204161706078.JavaMail.jakarta@nitrogen.mathforum.org>...

> Hi

>

> Is there an easy way to calculate the eigenvectors in which the first column

is normalized to 1? eg. A is a 3x3 matrix, I want to get eigenvectors of A with

the first eigenvector to be a unit vector.

>

> Thanks.

I'm not sure what you want. The eigenvectors

returned by eig will automatically have norm 1

already.

Are you asking to find a set of eigenvectors in

which the first eigenvector is specifically the

unit vector [1 0 0]'?

If this is what you want, it is not possible in the

general case, since that vector is not necessarily

an eigenvector. Do you know that the vector

above truly is an eigenvector, and you just want

to find the other two eigenvectors?

John