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Num.LeastSquaresQR

Computes the least squares solution of the linear system of equations Ax=b.
Syntax
          
Num.LeastSquaresQR(Mat:MAT, Vec:MAT):LIST

          

Description
Please note: The function(s) explained on this page is/are using the ApCoCoAServer. You will have to start the ApCoCoAServer in order to use it/them.

This command computes the least squares solution of the linear system of equations Ax=b, if there is no exact solution. The matrix Mat must have the same number of rows as Vec. The QR decomposition of Mat is used to find the solution.

Example
Dec(Num.LeastSquaresQR([[1,1],[0,1],[1,1]],[[0],[1],[0]]),2);
-- CoCoAServer: computing Cpu Time = 0
-------------------------------
["-0.99", "1"]
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See Also