Question

Dadas as matrizes A e B   o determinante  A+ B, é:

A= $\left[\begin{array}{ccc}1&2\\5&4\\&\end{array}\right]$


B=$\left[\begin{array}{ccc}-2&-2\\0&1\end{array}\right]$

Answer 1

Oi Juliano.

$detA=4-10\\ detA=-6\\ \\ detB=-2+0\\ detB=-2\\ \\ detA+detB=(-6)+(-2)\\ detA+detB=-8$