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Use the Vectors U and V to Find V · u=3ij+4kv=2i+2jk\mathbf { u } = 3 \mathbf { i } - \mathbf { j } + 4 \mathbf { k } \quad \mathbf { v } = 2 \mathbf { i } + 2 \mathbf { j } - \mathbf { k }

Question 44

Multiple Choice

Use the vectors u and v to find v · (v × u) . u=3ij+4kv=2i+2jk\mathbf { u } = 3 \mathbf { i } - \mathbf { j } + 4 \mathbf { k } \quad \mathbf { v } = 2 \mathbf { i } + 2 \mathbf { j } - \mathbf { k }


A) v(v×u) =4\mathbf { v } ^ { \prime } ( \mathbf { v } \times \mathbf { u } ) = 4
B) v(v×u) =0\mathbf { v } ^ { \prime } ( \mathbf { v } \times \mathbf { u } ) = 0
C) v(v×u) =4\mathbf { v } ^ { \cdot } ( \mathbf { v } \times \mathbf { u } ) = - 4
D) v(v×u) =3\mathbf { v } ^ { \prime } ( \mathbf { v } \times \mathbf { u } ) = 3
E) v(v×u) =3\mathbf { v } ^ { \cdot } ( \mathbf { v } \times \mathbf { u } ) = - 3

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