Slide 16
Slide 16 text
Javier Gonzalez-Sanchez | SER332 | Spring 2018 | 15
jgs
§ The dot product or inner product measures to what degree two vectors are
aligned
u · v = (u1
,u2
) · (v1
,v2
) = u1
* v1
+ u2
* v2
v * u = (5*7) + (5*3) = 50
v * w = (5*5) + (5*0) = 25
u * w = (7*5) + (3*0) = 35
u * u = (7*7) + (3*3) = 58
t * w = (0*5) + (5*0) = 0
Dot Product
q
v=[5,5]
u=[7,3]
w=[5,0]
t=[0,5]