[ c 1 -1 2 ] [ lll 2 & 1 & -1 ]= _________ - Vidyadip

Question

$\left[\begin{array}{c}1 \\ -1 \\ 2\end{array}\right]\left[\begin{array}{lll}2 & 1 & -1\end{array}\right]=$ _________

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Answer

$\left[\begin{array}{ccc}2 & 1 & -1 \\ -2 & -1 & 1 \\ 4 & 2 & -2\end{array}\right]$

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