Scilab 5.5.0

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# rref

computes matrix row echelon form by lu transformations

### Calling Sequence

R=rref(A)

### Arguments

- A
m x n matrix with scalar entries

- R
m x n matrix,row echelon form of a

### Description

`rref`

computes the row echelon form of the given matrix by left lu
decomposition. If ones need the transformation used just call
`X=rref([A,eye(m,m)])`

the row echelon form `R`

is `X(:,1:n)`

and
the left transformation `L`

is given by `X(:,n+1:n+m)`

such as `L*A=R`

### Examples

A=[1 2;3 4;5 6]; X=rref([A,eye(3,3)]); R=X(:,1:2) L=X(:,3:5);L*A

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