Jambmaths question:
If M and N are two matrices defined by $M=\left( \begin{matrix} 1 & 3 & 2 \\ 4 & 5 & -1 \\ -3 & 2 & 0 \\\end{matrix} \right)$and$\left( \begin{matrix} 1 & -2 & 3 \\ 4 & -1 & 5 \\ 2 & -3 & -1 \\\end{matrix} \right)$,evaluate 2M – 3N
Option A:
$\left( \begin{matrix} -1 & 12 & -5 \\ 4 & 13 & 13 \\ -12 & 13 & 3 \\\end{matrix} \right)$
Option B:
$\left( \begin{matrix} -1 & 12 & 5 \\ 4 & 7 & 13 \\ 0 & -5 & -3 \\\end{matrix} \right)$
Option C:
$\left( \begin{matrix} -1 & 0 & -5 \\ -4 & 7 & -17 \\ 0 & -5 & 3 \\\end{matrix} \right)$
Option D:
\[\left( \begin{matrix} -1 & 12 & -5 \\ -4 & 13 & -17 \\ -12 & 13 & 3 \\\end{matrix} \right)\]
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