Updating the qr factorization and the least squares problem Free adult porn live cams and chat no sign up

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I'm trying to understand how to solve a least squares problem of the form: $$\begin A& B \end\beginx\y\end = [b]$$ where I only explicitly solve for $y$ and not $x$.I have access to some c code which performs a QR factorization on $A$ and uses $Q_A$ on $B$ and $b$.The (co)variances of the shots have also been computed so that weights can be correctly assigned.

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The least squares solution of this problem is usually computed by "the method of normal equations".Least squares is then applied to $\tilde$ and $\tilde$ to find $y$.Could someone please help me with a description of this method?This should make it easier for people who read this article to go to the actual literature.However it does make for some awkwardness in a few places.

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