Question

escreva a matriz A=(aij)1x3, talque Aij=3i-2j

Answer 1

i= linha
j= coluna
A = |a(1,1) a(1,2) a(1,3)|
A = |3.(1)-2.(1) 3.(1)-2.(2) 3.(1)-2.(3)|
A = |1 -1 -3|