Find the dot product v · w.
-$\mathbf { v } = 2 \mathbf { i } + \mathbf { j } + 3 \mathbf { k }$ and $\mathbf { w } = \mathrm { i } + 2 \mathbf { j } - 2 \mathbf { k }$
A) $- 2$
B) $- 7$
C) 2
D) $- 6$

Name: Find the dot product v · w. -$\mathbf { v } = 2 \mathbf { i } + \mathbf { j } + 3 \mathbf { k }$ and $\mathbf { w } = \mathrm { i } + 2 \mathbf { j } - 2 \mathbf { k }$ A) $- 2$ B) $- 7$ C) 2 D) $- 6$
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Question

Quizplus · Accepted Answer

The dot product $v \cdot w$ is calculated as $ (2)(1) + (1)(2) + (3)(-2) = 2 + 2 - 6 = -2$.

Find the Dot Product V · W v=2i+j+3k\mathbf { v } = 2 \mathbf { i } + \mathbf { j } + 3 \mathbf { k }v=2i+j+3k

Find the Dot Product V · W $\mathbf { v } = 2 \mathbf { i } + \mathbf { j } + 3 \mathbf { k }$