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The Dot Product
1 Find the Dot Product of Two u=4i+9j,v=9i+8j\mathbf { u } = - 4 \mathbf { i } + 9 \mathbf { j } , \mathbf { v } = - 9 \mathbf { i } + 8 \mathbf { j }

Question 195

Multiple Choice

The Dot Product
1 Find the Dot Product of Two Vectors
- u=4i+9j,v=9i+8j\mathbf { u } = - 4 \mathbf { i } + 9 \mathbf { j } , \mathbf { v } = - 9 \mathbf { i } + 8 \mathbf { j } ; Find (4u) v( 4 \mathbf { u } ) \cdot \mathbf { v } .


A) 432
B) 452- 452
C) 24
D) 16

Correct Answer:

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