For $\bold{v} = \begin{pmatrix} 0 \\ -4 \\ 1 \end{pmatrix}$ and $\bold{w} = \begin{pmatrix} 2 \\ 2 \\ -1 \end{pmatrix},$ compute $\text{proj}_{\bold{w}} \bold{v}$.
Question:
For $\bold{v} = \begin{pmatrix} 0 \\ -4 \\ 1 \end{pmatrix}$ and $\bold{w} = \begin{pmatrix} 2 \\ 2 \\ -1 \end{pmatrix},$ compute $\text{proj}_{\bold{w}} \bold{v}$.
Answer:
Let's think step by step.

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\begin{pmatrix} -2 \\ -2 \\ 1 \end{pmatrix}
For $\bold{v} = \begin{pmatrix} 0 \\ -4 \\ 1 \end{pmatrix}$ and $\bold{w} = \begin{pmatrix} 2 \\ 2 \\ -1 \end{pmatrix},$ compute $\text{proj}_{\bold{w}} \bold{v}$.
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