Question

dadas as matrizes a=[1 2 3] [ 2 1 4] e b=[1 0] [2 1] [3 2], calcule se possível ​

Answer 1

Resposta:

$\left[\begin{array}{123}1&2&3\\2&1&4&\\\end{array}\right] . \left[\begin{array}{ccc}1&0\\2&1\\3&2\end{array}\right] =>$

Explicação passo-a-passo:

a)

$\left[\begin{array}{123}1&2&3\\2&1&4&\\\end{array}\right] . \left[\begin{array}{ccc}1&0\\2&1\\3&2\end{array}\right] =>$  $\left[\begin{array}{ccc}14\\9&\\\end{array}\right]$

X = 1.1 + 2.2 + 3.3 = 1 + 4  + 9 = 14  

Y = 2.0 + 1.1 + 4.2 = 0 + 1 + 8 = 0

$(A . B)^{t} =$  [14   9]

b) B.A =

X = 1.1 + 0.2 = 1 + 0 = 1

Y = 2.2 + 1.1 = 4 + 1 = 5

Z = 3.3 + 2.4 = 9 + 8 = 17

$\left[\begin{array}{ccc}1&\\5&\\17&\end{array}\right]$