Respostas

2014-03-08T10:41:30-03:00
Matriz A : 

A =   \left[\begin{array}{ccc}a11&a12\\a21&a22\\\end{array}\right]  \\  \\ B =   \left[\begin{array}{ccc}a11&a12\\a21&a22\\\end{array}\right]  \\  \\ \texttt{agora vamos achar os elementos das matrizes : }
 \\  \\ 
aij = i + j ( i = j )  \\ 
a11 = 1 + 1 = 2 \\ 
a22 = 2 + 2  = 4 \\  \\ aij = 0 (  i  \neq j) \\ a12 = 0 \\ a21 = 0 \\  \\ 


matriz :  \\  \\  A =  \left[\begin{array}{ccc}2&0\\0&4\\\end{array}\right]


\texttt{agora os elementos da matriz B: } \\  \\ bij = 2i - 3j \\ b11 = 2.1 - 3.1 = 2 - 3 = -1 \\ b12 = 2.1 - 3.2 = 2 - 6 = -4 \\ b21 = 2.2 - 3.1 = 4 - 3 = 1 \\ b22 = 2 .2 - 3.2 = 4 - 6 = -2 \\  \\ B =   \left[\begin{array}{ccc}-1&-4\\1&-2\\\end{array}\right]  \\ B ^{t}  =   \left[\begin{array}{ccc}-1&1\\-4&-2\\\end{array}\right]

\texttt{agora vamos fazer a soma : } \\  \\ A + B ^{t}  \\  \\   \left[\begin{array}{ccc}2&0\\0&4\\\end{array}\right]  +   \left[\begin{array}{ccc}-1&1\\-4&2\\\end{array}\right]  =   \left[\begin{array}{ccc}1&1\\-4&6\\\end{array}\right]


1 5 1
ta um pouco complicado pra entender essa resposta sobre os elementos...