When to use RREF in finding Eigenvectors

by selig5560
Tags: eigenvectors, rref
selig5560 is offline
Dec15-12, 11:35 PM
P: 38

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.


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halo31 is offline
Dec16-12, 09:26 PM
P: 51
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.
HallsofIvy is offline
Dec17-12, 08:06 AM
Sci Advisor
PF Gold
P: 38,879
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.

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