Linear Algebra Examples

$[\begin{array}{c} 1 \\ 1 \\ - 1 \end{array}] [\begin{array}{c} 2 \\ - 5 \\ 1 \end{array}]$

Step 1

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$[\begin{array}{c} 1 \\ 1 \\ - 1 \end{array}] [\begin{array}{c} 2 \\ - 5 \\ 1 \end{array}]$