\begin{pmatrix} 11 \\ 44 \end{pmatrix}
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Compute $\begin{pmatrix} 1 & 2 \\ 4 & 8 \\ \end{pmatrix} \begin{pmatrix} 5 \\ 3 \end{pmatrix}.$
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\begin{pmatrix} 11 \\ 44 \end{pmatrix}
Compute $\begin{pmatrix} 1 & 2 \\ 4 & 8 \\ \end{pmatrix} \begin{pmatrix} 5 \\ 3 \end{pmatrix}.$
train