Question

12) Dadas as matrizes
A=[3 8]
2 1
4 5

B=[1 7]
3 4
-4 -5

C=[-1 0]
-3 -7
-4 -2
calcule :
A) A+B-C ​

Answer 1

Resposta:

$\left[\begin{array}{ccc}5&15\\8&12\\4&2\end{array}\right]$

Explicação passo-a-passo:

                         $A+B-C$

$=\left[\begin{array}{ccc}3&8\\2&1\\4&5\end{array}\right]+\left[\begin{array}{ccc}1&7\\3&4\\-4&-5\end{array}\right]-\left[\begin{array}{ccc}-1&0\\-3&-7\\-4&-2\end{array}\right]$

$=\left[\begin{array}{ccc}3+1-(-1)&8+7-(0)\\2+3-(-3)&1+4-(-7)\\4+(-4)-(-4)&5+(-5)-(-2)\end{array}\right]$

$=\left[\begin{array}{ccc}5&15\\8&12\\4&2\end{array}\right]$

Espero ter ajudado!

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Bons estudos!