Question

Construa a matriz a= (aij)2x3 de modo que aij = 3i2 – j

Answer 1

Resolvendo:

$Matriz\:\:A=(a_{ij} )_{2x3}\\\\Para \:\:a_{ij} =3i^{2} -j,\:temos:\\\\Matriz\:\:A=\left[\begin{array}{ccc}3\:.\:1^{2} -1&3\:.\:1^{2} -2&3\:.\:1^{2} -3\\3\:.\:2^{2} -1&3\:.\:2^{2} -2&3\:.\:2^{2} -3\\\end{array}\right] \\\\\\Matriz\:\:A=\left[\begin{array}{ccc}3\:.\:1-1&3\:.\:1-2&3\:.\:1-3\\3\:.\:4-1&3\:.\:4-2&3\:.\:4-3\\\end{array}\right] \\\\\\Matriz\:\:A=\left[\begin{array}{ccc}3-1&3-2&3-3\\12-1&12-2&12-3\\\end{array}\right]$

$Matriz\:\:A=\left[\begin{array}{ccc}2&1&0\\11&10&9\\\end{array}\right]$

Espero ter ajudado!

Desculpe qualquer erro.