Find the indicated vector.
-Let $\mathbf { u } = 3 \mathbf { i } , \mathbf { v } = \mathbf { i } + \mathbf { j }$. Find $6 \mathbf { u } + \mathbf { v }$.
A) $19 i + 6 j$
B) $\mathbf { i } + 19 \mathrm { j }$
C) $19 i + j$
D) $11 \mathrm { i } + \mathrm { j }$

Question

Quizplus · Accepted Answer

First, multiply vector $\mathbf{u}$ by 6: $6 \mathbf{u} = 6(3\mathbf{i}) = 18\mathbf{i}$. Then, add vector $\mathbf{v}$ to it: $18\mathbf{i} + (\mathbf{i} + \mathbf{j}) = 19\mathbf{i} + \mathbf{j}$.

Find the Indicated Vector u=3i,v=i+j\mathbf { u } = 3 \mathbf { i } , \mathbf { v } = \mathbf { i } + \mathbf { j }u=3i,v=i+j

Find the Indicated Vector $\mathbf { u } = 3 \mathbf { i } , \mathbf { v } = \mathbf { i } + \mathbf { j }$