Finite Math Examples

$[\begin{array}{c} 1 & 0 & 2 \\ 0 & 1 & - 1 \end{array}]$

Step 1

The pivot positions are the locations with the leading $1$ in each row. The pivot columns are the columns that have a pivot position.

Pivot Positions: $a_{11}$ and $a_{22}$

Pivot Columns: $1$ and $2$