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March 18th, 2017, 05:08 PM  #1 
Newbie Joined: Mar 2017 From: Brisbane Posts: 3 Thanks: 0 Math Focus: linear algebra  Variancecovariance matrices
Hi all Here is a question which has been puzzling me for a few days now. Any help would be greatly appreciated. I think that I need to put all the terms in the inequality on one side, then factorise and consider what it means to be a positive definite matrix but I keep tying myself in knots! Thanks=) Last edited by ChristineJW; March 18th, 2017 at 05:16 PM. 

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