Question

Escreva a matriz A = (aij) 2x3 tal que aij = 3i-2j+4.

Answer 1

$\Large\boxed{\begin{array}{l}\sf A=(a_{ij})_{2\times3},~com~a_{ij}=3i-2j+4\\\sf a_{11}=3\cdot1-2\cdot1+4=5\\\sf a_{12}=3\cdot1-2\cdot2+4=3\\\sf a_{13}=3\cdot1-2\cdot3+4=1\\\sf a_{21}=3\cdot2-2\cdot1+4=8\\\sf a_{22}=3\cdot2-2\cdot2+4=6\\\sf a_{23}=3\cdot2-2\cdot3+4=4\\\sf A=\begin{bmatrix}\sf5&\sf3&\sf1\\\sf8&\sf6&\sf4\end{bmatrix}\end{array}}$