Use the Vectors U and V to Find (3u)× V $\mathbf { u } = 7 \mathbf { i } - \mathbf { j } + 8 \mathbf { k } \quad \mathbf { v } = 6 \mathbf { i } + 6 \mathbf { j } - \mathbf { k }$

question 22

Multiple Choice

Use the vectors u and v to find (3u) × v. $\mathbf { u } = 7 \mathbf { i } - \mathbf { j } + 8 \mathbf { k } \quad \mathbf { v } = 6 \mathbf { i } + 6 \mathbf { j } - \mathbf { k }$

• A) \(( 3 \mathbf { u } ) \times \mathbf { v } = - 141 \mathbf { i } + 165 \mathbf { j } + 144 \mathbf { k }\)
• B) \(\text { (3u) } \times \mathbf { v } = 165 \mathbf { i } - 141 \mathbf { j } + 144 \mathbf { k }\)
• C) \(( 3 \mathbf { u } ) \times \mathbf { v } = 165 \mathbf { i } + 165 \mathbf { j } + 144 \mathbf { k }\)
• D) \(( 3 \mathbf { u } ) \times \mathbf { v } = 165 \mathbf { i } + 144 \mathbf { j } + 144 \mathbf { k }\)
• E) \(\text { (3u) } \times \mathbf { v } = 144 \mathbf { i } + 165 \mathbf { j } - 141 \mathbf { k }\)

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