Vector (3D) Dot Product

Algebra Level 1

For vectors

u = ( 2 , 7 , 5 ) , v = ( 3 , − 8 , − 1 ) , u = (2, 7, 5), \quad v = (3, -8, -1),

what is the value of the dot product u ⋅ v ? u \cdot v?


The answer is -55.

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Lawahar Qasid by Lawahar Qasid

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1 solution

Porifera Ohm
Jan 8, 2015

As dot vector. You can use (2x3)+(7×-8)+(5×-1) = -55 .

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