Respostas

2013-09-10T17:02:08-03:00
A) A-B =   \left[\begin{array}{ccc}-5&3&\\2&-1&\\&&\end{array}\right]

B) A+2B =   \left[\begin{array}{ccc}-2&3&\\-1&8&\\&&\end{array}\right]

C) A.B =   \left[\begin{array}{ccc}-4&0&\\-1&6&\\&&\end{array}\right]
1 5 1