Respostas

2014-03-02T16:50:41-03:00
Matriz 2 x 3 : 

  \left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\\\end{array}\right]

sendo : 

aij=3i+j (se i≠j) , então : 
a12 = 3.1 + 2 = 3 + 2 = 5
a13 = 3.1 + 3 = 3 + 3 = 6
a21 = 3.2 + 1 = 6 + 1 = 7
a23 = 3.2 + 3 = 6 + 3 = 9

aij = 2i-3j (se i =j) , então : 
a11 = 2.1 - 3.1 = 2 - 3 = -1
a22 = 2.2 - 3.2 = 4 - 6 = -2

Matriz : 

  \left[\begin{array}{ccc}-1&5&6\\7&-2&9\\\end{array}\right]
1 5 1