Linear Algebra Examples

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot (3 [\begin{array}{c} 7 & - 4 & 2 \\ 1 & - 4 & - 3 \end{array}])$

Step 1

Multiply $3$ by each element of the matrix.

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 3 \cdot 7 & 3 \cdot - 4 & 3 \cdot 2 \\ 3 \cdot 1 & 3 \cdot - 4 & 3 \cdot - 3 \end{array}]$

Step 2

Simplify each element in the matrix.

Tap for more steps...

Step 2.1

Multiply $3$ by $7$ .

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 21 & 3 \cdot - 4 & 3 \cdot 2 \\ 3 \cdot 1 & 3 \cdot - 4 & 3 \cdot - 3 \end{array}]$

Step 2.2

Multiply $3$ by $- 4$ .

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 21 & - 12 & 3 \cdot 2 \\ 3 \cdot 1 & 3 \cdot - 4 & 3 \cdot - 3 \end{array}]$

Step 2.3

Multiply $3$ by $2$ .

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 21 & - 12 & 6 \\ 3 \cdot 1 & 3 \cdot - 4 & 3 \cdot - 3 \end{array}]$

Step 2.4

Multiply $3$ by $1$ .

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 21 & - 12 & 6 \\ 3 & 3 \cdot - 4 & 3 \cdot - 3 \end{array}]$

Step 2.5

Multiply $3$ by $- 4$ .

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 21 & - 12 & 6 \\ 3 & - 12 & 3 \cdot - 3 \end{array}]$

Step 2.6

Multiply $3$ by $- 3$ .

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] \cdot [\begin{array}{c} 21 & - 12 & 6 \\ 3 & - 12 & - 9 \end{array}]$

$[\begin{array}{c} 1 & 0 & - 3 \\ 4 & - 6 & 2 \end{array}] [\begin{array}{c} 21 & - 12 & 6 \\ 3 & - 12 & - 9 \end{array}]$