Talk:Linear Algebra/Eigenvalues and eigenvectors

When I looked at this page, I noticed that some sections were duplicated. This was caused by a recent edit:

Revision as of 19:35, 26 Oct 2004 137.122.14.20

I'll leave it to someone else to fix.

Joel Buursma

wow
after my lectures and my textbooks, this has been one of the most useful explanations. 141.213.66.46 21:59, 6 Apr 2005 (UTC)

Mistake?
In the example

$$P=\left(\begin{matrix}-1&1\\4&1\end{matrix}\right)$$

and

$$P^{-1}=1/5\left(\begin{matrix}1&-4\\-1&-1\end{matrix}\right)$$,

but I think $$P^{-1}$$ should be

$$P^{-1}=\frac{1}{5}\left(\begin{matrix}-1&1\\4&1\end{matrix}\right)$$.

--Silencer


 * It seems that you are wrong and the article is right--213.179.254.210 19:04, 30 Jun 2005 (UTC)

Hi Silencer. You are right, the article is wrong.

-t. Tristanreid 20:01, 18 July 2005 (UTC)


 * I agree. The article is wrong, and I shall change it. -MarkHudson 11:41, 4 August 2005 (UTC)

Lambdas replaced in last example
The last (vector ODE) example concluded that solutions to the equation would require that lambda be an eigenvalue of the matrix, but the rest of the example continues to use lambda. I just replaced the lambda with its specific values (4 and 2) in the rest of the problem.

134.126.91.18 18:03, 29 March 2006 (UTC)Spock

Most probably a typo
Eigenvalues and eigenvectors are not mere pretty facts about these vectors;... Should have been matrices? --88.73.234.250 23:05, 3 December 2006 (UTC)