Question

Montando a matriz quadrada 2x2, tal que: a11 = 5, a12 = 6, a21 = 2 e a22 = 4 a soma dos elementos da diagonal principal vale:

Answer 1

$\left[\begin{array}{ccc}5&6\\2&4\end{array}\right] \\\\d_p=5.4\\\\d_p=20\\\\d_a=-(6.2)\\\\d_a=-12$