Question

Considerando as matrizes C= 2
4
[8 -11 37
OA) 6 3 11
0
9
4 2 3
105
-3 1 2]
[8 11 31
C) 6 3 11
097
B
D)
E)
8-11 3
6 -3 11
09- -7
8-11 3
50
-4 31
3 -11
o
2
-15
então C x D é igual a:

Answer 1

Resolvendo:

$C\:.\:D=\left[\begin{array}{ccc}-4&3\\2&1\\4&-1\end{array}\right] \:.\:\left[\begin{array}{ccc}1&2&3\\4&-1&5\\\end{array}\right] \\\\\\C\:.\:D=\left[\begin{array}{ccc}-4+12&-8-3&-12+15\\2+4&4-1&6+5\\4-4&8+1&12-5\end{array}\right] \\\\\\C\:.\:D=\left[\begin{array}{ccc}8&-11&3\\6&3&11\\0&9&7\end{array}\right]$

Assim, letra A.

Espero ter ajudado!

Desculpe qualquer erro.