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row-echelon matrix form (not reduced)

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ali
ali 2011-5-31
评论： Joe 2023-4-14
what is row-echelon matrix form (not reduced) in matlab?

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回答（2 个）

Nagabhushan SN
Nagabhushan SN 2018-10-9
lu(A)
performs LU factorization of a matrix. So, you can get upper triangular matrix from there. Not sure though if it performs Gauss reduction
[L,U,P] = lu(A);
Ivan van der Kroon
Ivan van der Kroon 2011-5-31
With rref you will produce the reduced row echelon form, see
doc rref
But a non-reduced form is not unique. See for instance wikipedia: http://en.wikipedia.org/wiki/Gaussian_elimination. You can multiply individual rows with a scalar and/or add rows to other rows. It is in echelon form as long as it is upper-triangular.
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Carol Hurwitz
Carol Hurwitz 2018-7-20
yes ,it would be a good idea, especially since Lay's Linear Algebra seems to prefer Matlab
Charles Daniels
Charles Daniels 2020-9-23
it should be implemented the same way TI does in their calculators, for consistency

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