Finite Math Examples

$r \cdot 2 + (- 3) r \cdot 1 = [\begin{array}{c} 1 & 9 & - 5 & - 1 \\ 3 & 9 & 4 & 7 \\ - 5 & 5 & 9 & 1 \end{array}]$

Step 1

Transpose the matrix by switching its rows to columns.

$[\begin{array}{c} 1 & 3 & - 5 \\ 9 & 9 & 5 \\ - 5 & 4 & 9 \\ - 1 & 7 & 1 \end{array}]$