November 18th, 2017, 08:26 PM  #1 
Newbie Joined: Nov 2017 From: Georgia Posts: 2 Thanks: 0  Prove the identity
Prove the identity $\displaystyle Au.v = u.A^T v$ Note that "." in the equation means dot product. I know that I should write the dot products as products of matrices but I don't know how to do it. Thanks in advance Last edited by kookie; November 18th, 2017 at 08:38 PM. 
November 18th, 2017, 08:33 PM  #2 
Senior Member Joined: Feb 2016 From: Australia Posts: 1,609 Thanks: 550 Math Focus: Yet to find out. 
You can use "\cdot" instead of using a full stop to denote the dot product.

November 19th, 2017, 10:36 AM  #3 
Global Moderator Joined: Dec 2006 Posts: 19,286 Thanks: 1681 
See page 364 of this publication.


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dot product, identity, linear algebra, matrices, prove 
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