User talk:Fcastillo
Welcome!
[edit]Hello, and welcome to Wikipedia from SqueakBox! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few good links for newcomers:
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covariance matrix
[edit]Hi. Thanks for your message. The result follows directly from the definition of covariance matrix; the proof is trivial. Hope this helps, Robinh (talk) 19:51, 7 July 2010 (UTC)