I'm slightly confused by the definition of row echelon form. For example, is this matrix considered to be in row echelon form?
$$\begin{pmatrix} 1 & 2 & 5 & 8 \\ 0 & 0 & 1 & 3 \\ 0 & 0 & 0 & 1 \\ \end{pmatrix}$$
I'm slightly confused by the definition of row echelon form. For example, is this matrix considered to be in row echelon form?
$$\begin{pmatrix} 1 & 2 & 5 & 8 \\ 0 & 0 & 1 & 3 \\ 0 & 0 & 0 & 1 \\ \end{pmatrix}$$