Find $\mathbf { u } \times \mathbf { v }$ $\mathbf { u } = - 7 \mathbf { i } - 3 \mathbf { j } - 9 \mathbf { k } , \mathbf { v } = \mathbf { i } + 4 \mathbf { j } + 7 \mathbf { k }$

Find $\mathbf { u } \times \mathbf { v }$ .
$\mathbf { u } = - 7 \mathbf { i } - 3 \mathbf { j } - 9 \mathbf { k } , \mathbf { v } = \mathbf { i } + 4 \mathbf { j } + 7 \mathbf { k }$

A) $15 \mathbf { i } + 40 \mathbf { j } - 25 \mathbf { k }$
B) $- 82$
C) $- 58$
D) $15 \mathbf { i } - 40 \mathbf { j } - 25 \mathbf { k }$
E) $- 7 \mathbf { i } - 12 \mathbf { j } - 63 \mathbf { k }$

Correct Answer:

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