Question

determine a matriz transposta da matriz diagonal A, de ordem 3, definida por aij= i+j.

Answer 1

$A= \left[\begin{array}{ccc}2&0&0\\0&4&0\\0&0&6\end{array}\right] \\ \\ \\ A^t= \left[\begin{array}{ccc}2&0&0\\0&4&0\\0&0&6\end{array}\right]$