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Create local repository for matrix toolboxes. Step #0 done.
author Antonio Pino Robles <data.script93@gmail.com>
date Wed, 06 May 2015 14:56:53 +0200
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function z = rq(A,x)
%RQ      Rayleigh quotient.
%        RQ(A,x) is the Rayleigh quotient of A and x, x'*A*x/(x'*x).

%        Called by FV.

z = x'*A*x/(x'*x);