Question

sendo matrizes




Determine:

a) 3 X A

b) 2 X A + 4 X B

c) (3 X A t

d) 3 X A t​

Answer 1

Resposta:

Explicação passo a passo:

B)

Answer 2

Resposta:

Explicação passo a passo:

• Letra A:

$3 \left[\begin{array}{ccc}2&1\\3&2\end{array}\right]=\left[\begin{array}{ccc}3.2&3.1\\3.3&3.2\end{array}\right] =\left[\begin{array}{ccc}6&3\\9&6\end{array}\right]$

• Letra B:

$2\left[\begin{array}{ccc}2&1\\3&2\end{array}\right] +4\left[\begin{array}{ccc}1&5\\2&-2\end{array}\right] \\=\left[\begin{array}{ccc}2.2&2.1\\2.3&2.2\end{array}\right] +\left[\begin{array}{ccc}4.1&4.5\\4.2&4.(-2)\end{array}\right] \\=\left[\begin{array}{ccc}2.2&2.1\\2.3&2.2\end{array}\right] +\left[\begin{array}{ccc}4.1&4.5\\4.2&4.(-2)\end{array}\right] \\=\left[\begin{array}{ccc}4&2\\6&4\end{array}\right] +\left[\begin{array}{ccc}4&20\\8&-8\end{array}\right]$

$=\left[\begin{array}{ccc}4+4&2+20\\6+8&4-8\end{array}\right]\\=\left[\begin{array}{ccc}8&22\\14&-4\end{array}\right]$

• Letra C:

Não deu pra entender

• Letra D:

Não deu pra entender