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matrix.invert - Function



Package utility
Module mathematics
Tool matrix


Invert a matrix


Synopsis
invert(m)


Arguments

m   The matrix to be inverted (Input)


Returns
matrix


Description
The inversion function is Gauss-Jordan substitution with full pivoting. The input matrix may be rectangular. If the number of rows (equations) is greater then the number of columns (unknowns), the inverted matrix represents a least-squares fit. The input matrix is not affected. If the input matrix is singular, a fail is returned.

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2006-10-15