When to use RREF in finding Eigenvectors

1. Dec 15, 2012

selig5560

Hi,

I have a quick question, when should one use RREF in finding eigvenvectors? I've read through some books and sometimes they use them and sometimes they do not. I'm sorry for such a potentially stupid question.

Thanks,

Zubin

2. Dec 16, 2012

halo31

It could be that having one in the pivot position position makes it easier to write system in parametric vector form. Otherwise row echelon form would suffice.

Last edited: Dec 16, 2012
3. Dec 17, 2012

HallsofIvy

Staff Emeritus
Where did you find that "they sometimes use them"? The row reduced form of a matrix does NOT in general have the same eigenvalues as the original matrix so I do see how row reducing could help.