Question

escreva a matriz A=(aij)2×3 onde aij= 2i - 3j

Answer 1

A(aij)2x3 = $\left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\end{array}\right]$

A = $\left[\begin{array}{ccc}2.1-3.1&2.1-3.2&2.1-3.3\\2.2-3.1&2.2-3.2&2.2-3.3\end{array}\right]$

resolvendo:
A = $\left[\begin{array}{ccc}-1&-4&-8\\1&-2&-5\end{array}\right]$