Resposta :
(a11...a12...a13)
(3.1-1...3.1-2...3.1-3)
(3-1...3-2...3-3)
(2...1...0)
(3.1-1...3.1-2...3.1-3)
(3-1...3-2...3-3)
(2...1...0)
determine a matriz a = (aij) 3x1 tal que aij= 3i-j