Perform Operations with Vectors in Terms of i and j
-$\mathbf { u } = 11 \mathbf { i } - 3 \mathbf { j } , \mathbf { v } = - 4 \mathbf { i } + 8 \mathbf { j }$; Find $\mathbf { u } + \mathbf { v }$.
A) $7 \mathbf { i } + 5 \mathbf { j }$
B) $6 \mathbf { i } + 5 \mathbf { j }$
C) $15 \mathbf { i } + 6 \mathbf { j }$
D) $- 15 \mathbf { i } + 5 \mathbf { j }$

Question

Quizplus · Accepted Answer

To find $\mathbf { u } + \mathbf { v }$, add the corresponding components: $11\mathbf{i} + (-4\mathbf{i}) = 7\mathbf{i}$ and $(-3\mathbf{j}) + 8\mathbf{j} = 5\mathbf{j}$, resulting in $7\mathbf{i} + 5\mathbf{j}$.

Perform Operations with Vectors in Terms of I and J u=11i−3j,v=−4i+8j\mathbf { u } = 11 \mathbf { i } - 3 \mathbf { j } , \mathbf { v } = - 4 \mathbf { i } + 8 \mathbf { j }u=11i−3j,v=−4i+8j

Perform Operations with Vectors in Terms of I and J $\mathbf { u } = 11 \mathbf { i } - 3 \mathbf { j } , \mathbf { v } = - 4 \mathbf { i } + 8 \mathbf { j }$