Respostas

2014-06-03T19:57:52-03:00
  \left[\begin{array}{ccc}a11&a12&\\a21&a22&\\a31&a32&\end{array}\right]



a11= 1+2(1)= 3    a12=1+2(2)=5
a21=2+2(1)=4      a22=2+2(2)=6
a31=3+2(1)=5      a32=3+2(2)=7

  \left[\begin{array}{ccc}3&5\\4&6\\5&7\end{array}\right]

1 5 1