Question

1) Dadas as matrizes: A=|2 5 6 1|, B=|1 3 6 5| e C=|4 5 6 0|. Calcule:

a) A+B

b)A-C​

Answer 1

$A=\left[ \begin{array}{cccc} 2 & 5 & 6 & 1 \end{array}\right]\\\\B = \left[ \begin{array}{cccc} 1 & 3 & 6 & 5 \end{array}\right]\\\\C = \left[ \begin{array}{cccc} 4 & 5 & 6 & 0 \end{array}\right]$

A) A + B

$A + B = \left[ \begin{array}{cccc} 2 & 5 & 6 & 1 \end{array}\right]+\left[ \begin{array}{cccc} 1 & 3 & 6 & 5 \end{array}\right]$

$A + B = \left[ \begin{array}{cccc} 2+1 & 5+3 & 6+6 & 1+5 \end{array}\right]$

$A + B = \left[ \begin{array}{cccc} 3 & 8 & 12 & 6 \end{array}\right]$

B) A - C

$A - C = \left[ \begin{array}{cccc} 2 & 5 & 6 & 1 \end{array}\right]-\left[ \begin{array}{cccc} 4 & 5 & 6 & 0 \end{array}\right]$

$A - C = \left[ \begin{array}{cccc} 2-4 & 5-5 & 6-6 & 1-0 \end{array}\right]$

$A - C = \left[ \begin{array}{cccc} -2 & 0 & 0 & 1 \end{array}\right]$