Question

me ajudem porfavorrr

Answer 1

$a= - 2\left[\begin{array}{ccc}-3&4&-7\\2&0&5\\9&-8&-1\end{array}\right]$$+3 \left[\begin{array}{ccc}5&-9&0\\1&-2&4\\3&6&7\end{array}\right] ^{T} =\left[\begin{array}{ccc}21&-1&-9\\-35&-6&34\\14&2&23\end{array}\right]$

A soma de duas matrizes é calculada adicionando elementos correspondentes das matrizes.

$-2 \left[\begin{array}{ccc}6&-8&-14\\-4&0&-10\\-18&16&2\end{array}\right] +3 \left[\begin{array}{ccc}15&-27&O\\3&-6&12\\9&18&21\end{array}\right] =\left[\begin{array}{ccc}6+15&-8+(-27)&14+0\\-4+3&0+(-6)&-10+12\\-18+9&16+18&2+21\end{array}\right] =\left[\begin{array}{ccc}21&-35&14\\-1&-6&2\\-9&34&23\end{array}\right]$$-2\left[\begin{array}{ccc}-3&4&-7\\2&0&5\\9&-8&-1\end{array}\right] +3\left[\begin{array}{ccc}5&-9&0\\1&-2&4\\3&6&7\end{array}\right] =\left[\begin{array}{ccc}21&-35&14\\-1&-6&2\\-9&34&23\end{array}\right]$

ENTÃO FICOU

$\left[\begin{array}{ccc}5&8&-4\\6&9&-5\\4&7&-2\end{array}\right] X$