Perform Operations with Vectors in Terms of i and j
-$\mathbf { u } = - 2 \mathbf { i } - 2 \mathbf { j } , \mathbf { v } = 8 \mathbf { i } + 7 \mathbf { j } ;$ Find $\mathbf { u } - \mathbf { v }$.
A) $- 10 \mathbf { i } - 9 \mathbf { j }$
B) $6 \mathbf { i } + 5 \mathbf { j }$
C) $- 11 \mathbf { i } + 5 \mathbf { j }$
D) $- 12 \mathbf { i } + 5 \mathbf { j }$

Question

Quizplus · Accepted Answer

To find $\mathbf { u } - \mathbf { v }$, subtract the corresponding components of $\mathbf { v }$ from $\mathbf { u }$: $(-2 - 8)\mathbf { i } + (-2 - 7)\mathbf { j } = -10\mathbf { i } - 9\mathbf { j }$.

Perform Operations with Vectors in Terms of I and J u=−2i−2j,v=8i+7j;\mathbf { u } = - 2 \mathbf { i } - 2 \mathbf { j } , \mathbf { v } = 8 \mathbf { i } + 7 \mathbf { j } ;u=−2i−2j,v=8i+7j;

Perform Operations with Vectors in Terms of I and J $\mathbf { u } = - 2 \mathbf { i } - 2 \mathbf { j } , \mathbf { v } = 8 \mathbf { i } + 7 \mathbf { j } ;$