Find 2u - 3v.? $\mathbf { u } = 6 \mathbf { i } , \mathbf { v } = \mathbf { j }$ ?
A) $12 \mathbf { i } - 3 \mathbf { j }$
B)? $- 12 \mathbf { i } - 3 \mathbf { j }$
C)? $6 \mathbf { i } - 3 \mathbf { j }$
D)? $12 \mathbf { i } + 3 \mathbf { j }$
E)? $6 i - j$

Question

Quizplus · Accepted Answer

Doubling $u$ gives $12\mathbf{i}$ and tripling $v$ gives $3\mathbf{j}$. Subtracting $3v$ from $2u$ results in $12\mathbf{i} - 3\mathbf{j}$.

Find 2u - 3v u=6i,v=j\mathbf { u } = 6 \mathbf { i } , \mathbf { v } = \mathbf { j }u=6i,v=j

Find 2u - 3v $\mathbf { u } = 6 \mathbf { i } , \mathbf { v } = \mathbf { j }$