Question

Sejam as matrizes a= (2,1 e 3, 4) b= (5,3 e1,2) o valor de 2A + 3B é :

Answer 1

$2\left[\begin{array}{ccc}2&1\\3&4\\\end{array}\right] +3 \left[\begin{array}{ccc}5&3\\2&1\\\end{array}\right] \\ \\ \left[\begin{array}{ccc}4&2\\6&8\\\end{array}\right] + \left[\begin{array}{ccc}15&9\\6&3\\\end{array}\right] \\ \\ \left[\begin{array}{ccc}4+15&2+9\\6+6&8+3\\\end{array}\right] = \left[\begin{array}{ccc}19&11\\12&11\\\end{array}\right]$