Question

Alguém me explica essa questão não entendi

Answer 1

Resposta:

$a)\\ \\ \begin{pmatrix}2\\ 6\\ 3\end{pmatrix}+\begin{pmatrix}1\\ 6\\ 2\end{pmatrix}+\begin{pmatrix}0\\ 4\\ -2\end{pmatrix}=\begin{pmatrix}2+1+0\\ 6+6+4\\ 3+2-2\end{pmatrix}=\begin{pmatrix}3\\ 16\\ 3\end{pmatrix}$

b)

$\begin{pmatrix}2\\ 6\\ 3\end{pmatrix}-\begin{pmatrix}1\\ 6\\ 2\end{pmatrix}+\begin{pmatrix}0\\ 4\\ -2\end{pmatrix}=\begin{pmatrix}2-1+0\\ \not6-\not6+4\\ 3-2-2\end{pmatrix}=\begin{pmatrix}1\\ 4\\ -1\end{pmatrix}$

c)

$\begin{pmatrix}2\\ 6\\ 3\end{pmatrix}-\begin{pmatrix}1\\ 6\\ 2\end{pmatrix}-\begin{pmatrix}0\\ 4\\ -2\end{pmatrix}=\begin{pmatrix}2-1-0\\\not 6-\not6-4\\ 3-\not2+\not2\end{pmatrix}=\begin{pmatrix}1\\ -4\\ 3\end{pmatrix}$