If A = 2 & 4 3 & 2 and B = -2 & 5 3 & 4 , then find (3A – B). - Vidyadip

Question

$\text{If A} = \begin{bmatrix} 2 & 4 \\ 3 & 2 \\ \end{bmatrix} \text{and B} = \begin{bmatrix} -2 & 5 \\ 3 & 4 \\ \end{bmatrix}, $ $\text{then find (3A – B).}$

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Answer

$3 \begin{bmatrix} 2 & 4 \\ 3 & 2 \\ \end{bmatrix} - \begin{bmatrix} -2 & 5 \\ 3 & 4 \\ \end{bmatrix} $
$ = \begin{bmatrix} 8 & 7 \\ 6 & 2 \\ \end{bmatrix}$

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