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The Value of a That Makes v=−4i+5j+3k\mathbf { v } = - 4 \mathbf { i } + 5 \mathbf { j } + 3 \mathbf { k }

Question 128

Multiple Choice

The value of a that makes v=−4i+5j+3k\mathbf { v } = - 4 \mathbf { i } + 5 \mathbf { j } + 3 \mathbf { k } and w=ai−j−k\mathbf { w } = a \mathbf { i } - \mathbf { j } - \mathbf { k } orthogonal is


A) 2
B) 5
C) 6
D) -2
E) -6

Correct Answer:

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