Well, we're on a message board, so of course you're going to say you know what an eigenvalue is. That's the point of asking if you could handle some simple matrix questions. :P
I still don't understand the point of asking me that. I'm not the one writing books or articles in an authoritative tone on topics I know little about.
If I were to write an article about math with glaring errors, then your question would make more sense. Until then, my linear algebra ability isn't relevant.
