Question

Construir a matriz A (aij) do tipo 2×3. Sendo aij=3i-8j

Answer 1

$A= \left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\end{array}\right] \\ \\ \\ A= \left[\begin{array}{ccc}{3.1-8.1}&{3.1-8.2}&{3.1-8.3}\\{3.2-8.1}&{3.2-8.2}&{3.2-8.3}\end{array}\right] \\ \\ \\ A= \left[\begin{array}{ccc}-5&-13&-21\\-2&-10&-18\end{array}\right]$