If $\mathbf{v} \times \mathbf{w} = \begin{pmatrix} 2 \\ 7 \\ -13 \end{pmatrix},$ then find $\mathbf{w} \times \mathbf{v}.$
Question:
If $\mathbf{v} \times \mathbf{w} = \begin{pmatrix} 2 \\ 7 \\ -13 \end{pmatrix},$ then find $\mathbf{w} \times \mathbf{v}.$
Answer:
Let's think step by step.

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\begin{pmatrix} - 2 \\ -7 \\ 13 \end{pmatrix}
If $\mathbf{v} \times \mathbf{w} = \begin{pmatrix} 2 \\ 7 \\ -13 \end{pmatrix},$ then find $\mathbf{w} \times \mathbf{v}.$
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