Question

determine a matrizes
a)2A+B
b)A-2B​

Answer 1

Resposta:

Explicação passo a passo:

a)

$2A=\begin{pmatrix}6&-4\\ 2&-10\\ 8&-6\end{pmatrix}$

$2A+B=\begin{pmatrix}6+0&-4+1&\\ 2+3&-10+2\\ 8+1&-6+5\end{pmatrix}\\ \\ \\ 2A+b=\begin{pmatrix}6&-3\\ 5&8\\ 9&-1\end{pmatrix}$

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b)

$-2B=\begin{pmatrix}0&-2\\ 6&-4\\ -2&-10\end{pmatrix}$

$A-2B=\begin{pmatrix}3+0&-2-2\\ 1+6&-5-4\\ 4-2&-3-10\end{pmatrix}\\ \\ \\ A-2B=\begin{pmatrix}3&-4\\ 7&-9\\ 2&-13\end{pmatrix}$