Find the indicated sum or difference, if it is defined.
-$$\left[ \begin{array} { r }
3 \
- 1 \
- 4
\end{array} \right] + \left[ \begin{array} { r }
- 5 \
6 \
9
\end{array} \right]$$
A) $\left[ \begin{array} { l } 2 \ 5 \ 6 \end{array} \right]$
B) $\left[ \begin{array} { r r } 3 & - 5 \ - 1 & 6 \ - 4 & 9 \end{array} \right]$
C) $\left[ \begin{array} { l l l } - 2 & 5 & 5 \end{array} \right]$
D) $\left[ \begin{array} { r } - 2 \ 5 \ 5 \end{array} \right]$

Question

Find the indicated sum or difference, if it is defined.
-$$\left[ \begin{array} { r } 
3 \
- 1 \
- 4
\end{array} \right] + \left[ \begin{array} { r } 
- 5 \
6 \
9
\end{array} \right]$$
A) $\left[ \begin{array} { l } 2 \ 5 \ 6 \end{array} \right]$
B) $\left[ \begin{array} { r r } 3 & - 5 \ - 1 & 6 \ - 4 & 9 \end{array} \right]$
C) $\left[ \begin{array} { l l l } - 2 & 5 & 5 \end{array} \right]$
D) $\left[ \begin{array} { r } - 2 \ 5 \ 5 \end{array} \right]$

Quizplus · Accepted Answer

To find the sum of two vectors, add their corresponding components: $3 + (-5) = -2$, $-1 + 6 = 5$, and $-4 + 9 = 5$.

Find the Indicated Sum or Difference, If It Is Defined [3−1−4]+[−569]\left[ \begin{array} { r } 3 \\- 1 \\- 4\end{array} \right] + \left[ \begin{array} { r } - 5 \\6 \\9\end{array} \right]​3−1−4​​+​−569​​

Find the Indicated Sum or Difference, If It Is Defined $\left[ \begin{array} { r } 3 \\- 1 \\- 4\end{array} \right] + \left[ \begin{array} { r } - 5 \\6 \\9\end{array} \right]$