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Find the Dot Product V · W v=15i+5j,w=4i4j\mathbf { v } = - 15 \mathrm { i } + 5 \mathbf { j } , \quad \mathbf { w } = 4 \mathbf { i } - 4 \mathrm { j }

Question 154

Multiple Choice

Find the dot product v · w.
- v=15i+5j,w=4i4j\mathbf { v } = - 15 \mathrm { i } + 5 \mathbf { j } , \quad \mathbf { w } = 4 \mathbf { i } - 4 \mathrm { j }


A) 60- 60
B) 40- 40
C) 20- 20
D) 80- 80

Correct Answer:

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