Question

Determine, explicitamente, A matriz(a i j) 3x2 em que a i j= i -j2.

Answer 1

$A_{3x2} \\ A= \left[\begin{array}{cc}a_{ij}&a_{ij}&a_{ij}&a_{ij}&a_{ij}&a_{ij}\end{array}\right] = \left[\begin{array}{cc}a_{11}&a_{12}&a_{21}&a_{22}&a_{31}&a_{32}\end{array}\right] \\ \\ \\ Se \\ i * j = i - 2*j \\ A = \left[\begin{array}{cc}1-2*1&1-2*2&2-2*1&2-2*2&3-2*1&3-2*2\end{array}\right] = \left[\begin{array}{cc}1-2&1-4&2-2&2-4&3-2&3-4\end{array}\right] \\ \\ A = \left[\begin{array}{cc}-1&-3&0&-2&1&-1\end{array}\right]$