Question

Sendo a matriz B = (bij)2x3 definida por bij = 2i +2j, escreva a matriz B

Answer 1

$B = (b_{ij})_{2x3}\\b_{ij} = 2i +2j\\\\\\B = \displaystyle\left[ \begin{array}{ccc} b_{1, 1} & b_{1, 2} & b_{1, 3} \\ b_{2, 1} & b_{2, 2} & b_{2, 3} \end{array}\right]\\\\\\B = \displaystyle\left[ \begin{array}{ccc} 2.1+2.1 & 2.1+2.2 & 2.1+2.3 \\ 2.2+2.1 & 2.2+2.2 & 2.2+2.3 \end{array}\right]\\\\\\B = \displaystyle\left[ \begin{array}{ccc} 4 & 6 & 8 \\ 6 & 8 & 10 \end{array}\right]$