Compute
\[\begin{pmatrix} 3 & 1 & 0 \\ -7 & 4 & 2 \\ 0 & 5 & -1 \end{pmatrix} \begin{pmatrix} 4 \\ -1 \\ -2 \end{pmatrix}.\]
Question:
Compute
\[\begin{pmatrix} 3 & 1 & 0 \\ -7 & 4 & 2 \\ 0 & 5 & -1 \end{pmatrix} \begin{pmatrix} 4 \\ -1 \\ -2 \end{pmatrix}.\]
Answer:
Let's think step by step.

user
\begin{pmatrix} 11 \\ -36 \\ -3 \end{pmatrix}
Compute
\[\begin{pmatrix} 3 & 1 & 0 \\ -7 & 4 & 2 \\ 0 & 5 & -1 \end{pmatrix} \begin{pmatrix} 4 \\ -1 \\ -2 \end{pmatrix}.\]
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