Question

sendo a matriz A =(aij)2x3 onde aij ={0,se i>j
1,se i -1, se i = j qual a matriz a?

Answer 1

$A= \left[\begin{array}{ccc}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\end{array}\right] \\ \\ \\ A= \left[\begin{array}{ccc}-1&1&1\\0&-1&1\end{array}\right] \\ \\ 1$