Respostas

2014-02-26T20:57:03-03:00
 A =  \left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\\a31&a32&a33\end{array}\right]

aij = 2i - j²
a11 = 2.1-1² = 2 - 1 = 1
a12 = 2.1-2² = 2 - 4 = -2
a13 = 2.1-3³ = 2 - 9 = -7
a21 = 2.2-1² = 4 - 1 = 3
a22 = 2.2-2² = 4 - 4 = 0
a23 = 2.2-3² = 4 - 9 = -5
a31 = 3.1-1² = 3 - 1 = 2
a32 = 3.3-2² = 9 - 4 = 5
a33 = 3.3-3² = 9 - 9 = 0

\boxed{  \left[\begin{array}{ccc}1&-2&-7\\3&0&-5\\2&5&0\end{array}\right] }
2 5 2