Find the dot product of u and v. u = $( 9 , - 9 , - 2 )$ ,v = $( - 9 , - 2 , - 9 )$
A)-45
B)-22
C) $( 0 , - 11 , - 11 )$
D)-81
E) $( 0 , - 11 , - 11 )$.

Question

Quizplus · Accepted Answer

The dot product of two vectors $ \mathbf{u} = (a, b, c) $ and $ \mathbf{v} = (x, y, z) $ is calculated as $ a \cdot x + b \cdot y + c \cdot z $. For $ \mathbf{u} = (9, -9, -2) $ and $ \mathbf{v} = (-9, -2, -9) $, the dot product is $ 9 \cdot (-9) + (-9) \cdot (-2) + (-2) \cdot (-9) = -81 + 18 + 18 = -45 $.

Find the Dot Product of U and V (9,−9,−2)( 9 , - 9 , - 2 )(9,−9,−2)

Find the Dot Product of U and V $( 9 , - 9 , - 2 )$