Question

Alguém poderia me ajudar com essa questão de matrizes? Obrigada desde já.

Answer 1

$\\ 3*x + \left[\begin{array}{ccc}1&1\\2&4\\6&8\end{array}\right] = \left[\begin{array}{ccc}10&4\\2&16\\0&8\end{array}\right] \\ \\ 3x = \left[\begin{array}{ccc}10&4\\2&16\\0&8\end{array}\right] - \left[\begin{array}{ccc}1&1\\2&4\\6&8\end{array}\right] \\ \\ x = \left[\begin{array}{ccc}(10-1)&(4-1)\\(2-2)&(16-4)\\(0-6)&(8-8)\end{array}\right] /3 \\ \\ x = \left[\begin{array}{ccc}3&1\\0&4\\-2&0\end{array}\right] \\ x_{3,2} = 0$