Linear Algebra Examples

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

Step 1

Multiply $2$ by each element of the matrix.

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

Step 2

Simplify each element in the matrix.

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Step 2.1

Multiply $2$ by $4$ .

$[\begin{array}{c} 8 \\ 2 \cdot - 1 \\ 2 \cdot 3 \end{array}] \cdot (3 [\begin{array}{c} 2 \\ 5 \\ - 7 \end{array}])$

Step 2.2

Multiply $2$ by $- 1$ .

$[\begin{array}{c} 8 \\ - 2 \\ 2 \cdot 3 \end{array}] \cdot (3 [\begin{array}{c} 2 \\ 5 \\ - 7 \end{array}])$

Step 2.3

Multiply $2$ by $3$ .

$[\begin{array}{c} 8 \\ - 2 \\ 6 \end{array}] \cdot (3 [\begin{array}{c} 2 \\ 5 \\ - 7 \end{array}])$

Step 3

Multiply $3$ by each element of the matrix.

$[\begin{array}{c} 8 \\ - 2 \\ 6 \end{array}] \cdot [\begin{array}{c} 3 \cdot 2 \\ 3 \cdot 5 \\ 3 \cdot - 7 \end{array}]$

Step 4

Simplify each element in the matrix.

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Step 4.1

Multiply $3$ by $2$ .

$[\begin{array}{c} 8 \\ - 2 \\ 6 \end{array}] \cdot [\begin{array}{c} 6 \\ 3 \cdot 5 \\ 3 \cdot - 7 \end{array}]$

Step 4.2

Multiply $3$ by $5$ .

$[\begin{array}{c} 8 \\ - 2 \\ 6 \end{array}] \cdot [\begin{array}{c} 6 \\ 15 \\ 3 \cdot - 7 \end{array}]$

Step 4.3

Multiply $3$ by $- 7$ .

$[\begin{array}{c} 8 \\ - 2 \\ 6 \end{array}] \cdot [\begin{array}{c} 6 \\ 15 \\ - 21 \end{array}]$

$[\begin{array}{c} 8 \\ - 2 \\ 6 \end{array}] [\begin{array}{c} 6 \\ 15 \\ - 21 \end{array}]$