Question

Evaluate the expression:

v ⋅ w

Given the vectors:

r = <8, 8, -6>; v = <3, -8, -3>; w = <-4, -2, -6>

Answer 1

@IrishBoy123

Answer 2

you did the dot yourself last time so this should be easy!

first re-check the question, \(\vec r\) is irrelevant, is that right?

Answer 3

you just want \(\vec v \bullet \vec w\), yes?

Answer 4

yeah

Answer 5

but how do I do the dot with three numbers?

Answer 6

for the dot you just multiply the x component of each vector, the y component of each and the z component of each, and add the lot up


make sense?

Answer 7

oh hyeah okay just a min

Answer 8

dot: (3)(-4)+(-8)(-2)+(-3)(-6)=22

Answer 9

http://www.urbandictionary.com/define.php?term=Booyah

Answer 10

hahah so thats it?

Answer 11

yep

Answer 12

sweet that was easy lol thanks!