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If , ,k are the standard unit basis vectors in 3D, determine the value of: k(j- 3k) + (i - 4k (7-4k) - 7(ix k

If , ,k are the standard unit basis vectors in 3D, determine the value of:

k(j- 3k) + (i - 4k (7-4k) - 7(ix k

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