Question

escreva A=(aıj) 2x3 tal que aıj=2i+3j

Answer 1

$\left[\begin{array}{ccc}a_{1\times1}&a_{1\times2}&a_{1\times3}\\a_{2\times1}&a_{2\times2}&a_{2\times3}\end{array}\right]$


$a_{i\times j} = (2\cdot i)+ (3\cdot j) \\ a_{1\times1} = (2\cdot1)+ (3\cdot1) = 5\\ a_{1\times2} = (2\cdot1)+ (3\cdot2) = 8 \\ a_{1\times3}=(2\cdot1)+ (3\cdot3) = 11\\a_{2\times1} =(2\cdot2)+ (3\cdot1) = 7\\ a_{2\times2}=(2\cdot2)+ (3\cdot2) = 10 \\ a_{2\times3}=(2\cdot2)+ (3\cdot3) = 13$


$A = \left[\begin{array}{ccc}5}&8&11\\7&10&13\end{array}\right]$

Espero ter ajudado, qualquer dúvida comente embaixo! :)