Question

Evaluate the expression:

v ⋅ w

Given the vectors:

r = <5, -5, -2>; v = <2, -8, -8>; w = <-2, 6, -5>

Answer 1

@gorv

Answer 2

v ⋅ w is the dot product of vector v and vector w

Answer 3

to compute the dot product, you multiply the corresponding coordinates and then add up the products


v dot w = <2, -8, -8> dot <-2, 6, -5>

v dot w = 2*(-2) + (-8)*6 + (-8)*(-5)

v dot w = -12