Question

Encontre a matriz A= (aij) 4x3 onde aij= 3i - 2j

Answer 1

Resposta:

Explicação passo-a-passo:

$a_1_1=3.1-2.1=1\\a_1_2=3.1-2.2=-1\\a_1_3=3.1-2.3=-3\\a_2_1=3.2-2.1=4\\a_2_2=3.2-2.2=2\\a_2_3=3.2-2.3=0\\a_3_1=3.3-2.1=7\\a_3_2=3.3-2.2=5\\a_3_3=3.3-2.3=3\\\\a_4_1=4.3-2.1=10\\a_4_2=4.3-2.2=8\\a_4_3=4.3-2.3=6\\\\\left[\begin{array}{ccc}1&-1&-3\\4&2&0\\7&5&3\\10&8&6\end{array}\right]$