Question

Dadas as matrizes A e B a alternativa que representa o determinante A+ B, é: A= [1 2 5 4] B= [-2 -2 0 1]

a -6

b -4

c -3

d -8

e -5

Answer 1

$\left[\begin{array}{ccc}1&2\\5&4\end{array}\right] + \left[\begin{array}{ccc}-2&-2\\0&1\end{array}\right] = 4-10+(-2)+0 = -8 letra d$