Question

Considerando as matriz A e B Abaixo calcule A+B. A) (2 5 7 -1 - 9 4) B) (6 0 4 -3 9 11)​

Answer 1

$A=\left[\begin{array}{ccc}2&5&7\\-1&9&4\end{array}\right] \\\\B=\left[\begin{array}{ccc}6&0&4\\-3&9&11\end{array}\right] \\\\\\A+B=\left[\begin{array}{ccc}2&5&7\\-1&9&4\end{array}\right] +\left[\begin{array}{ccc}6&0&4\\-3&9&11\end{array}\right]\\\\A+B=\left[\begin{array}{ccc}2+6&5+0&7+4\\-1+(-3)&9+9&4+11\end{array}\right]\\\\A+B=\left[\begin{array}{ccc}8&5&11\\-4&18&15\end{array}\right]$

Para somar duas matrizes é preciso apenas somar os valores que estão posicionado na mesma linha e coluna.