Wednesday, May 31, 2017

linear algebra - Write 3 by 4 matrix as a product of elementary matrices and a row echelon form matrix

I want to write $A$ as a product of $4$ matrices $B$,$C$,$D$, and $E$ such that $B$,$C$, and $D$ are elementary matrices and $E$ is row-echelon form.



$$
A = \begin{bmatrix}
0&1&7&8\\
1&3&3&8\\
-2&5&1&8
\end{bmatrix}

$$



Thanks

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