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The Value of a That Makes v=2ai+j−k\mathbf { v } = 2 a \mathbf { i } + \mathbf { j } - \mathbf { k }

Question 38

Multiple Choice

The value of a that makes v=2ai+j−k\mathbf { v } = 2 a \mathbf { i } + \mathbf { j } - \mathbf { k } and w=i−j+k\mathbf { w } = \mathbf { i } - \mathbf { j } + \mathbf { k } orthogonal is


A) 1
B) 2
C) 3
D) -1
E) -2

Correct Answer:

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