Evaluate:[2 -1 3] [ l 4 3 1 ] - Vidyadip

Question

Evaluate$:[2 \ -1 \ 3]\left[\begin{array}{l}4 \\ 3 \\ 1\end{array}\right]$

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Answer

$[2 \ -1 \ 3]\left[\begin{array}{l} 4 \\ 3 \\ 1 \end{array}\right]$
$=[8-3+3]$
$=[8]$

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