RREF

#Math

Requirements

1. The first nonzero entry must be a 1 in a nonzero row, called the leading 1/pivot
2. If a column as a pivot, all other entries in the column must be 0
3. All rows with pivots must contain a pivot above and to the left

• E.g.:
  $$
  \begin{bmatrix}
  0 & 1 & 0 & 3 & 5 \\ 0 & 0 & 1 & 3 & 1 \\ 0 & 0 & 0 & 0 & 0
  \end{bmatrix}
  $$