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Topic: eigenvalues of A
Replies: 4   Last Post: Nov 4, 2009 11:25 PM

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Gerry Myerson

Posts: 4,919
Registered: 12/6/04
Re: eigenvalues of A
Posted: Nov 4, 2009 10:09 PM
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In article
<5da73f76-99b2-455e-8788-0034cc6d9501@t2g2000yqn.googlegroups.com>,
G Patel <gaya.patel@gmail.com> wrote:

> true or false.... eigenvalues of A are same as eigenvalues of kA

true if k = 1 and in some other fairly trivial cases, false most of
the time. If I is the identity matrix, are the eigenvalues of I
the same as the eigenvalues of 2I?

> (because if v is eigenvector for A, then kv is eigenvector for kA)

I'm not familiar with this use of the word, "because."

--
Gerry Myerson (gerry@maths.mq.edi.ai) (i -> u for email)



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