Question

Evaluate the expression:

v ⋅ w

Given the vectors:

r = <8, 1, -6>; v = <6, 7, -3>; w = <-7, 5, 2>

Answer 1

\[u\cdot v = u_1 v_1 + u_2 v_2 + \cdot\cdot\cdot + u_n v_n\]

Answer 2

I only have -42, 35, and -6. After that, I do not know what to do really.

Answer 3

just add

Answer 4

so, it's -13?

Answer 5

looks that way

Answer 6

Okay ! Thank You :)

Answer 7

you're welcome!

Answer 8

My apologies, are you positive? Is that how you really solve this, it just seems too simple.

Answer 9

http://en.wikipedia.org/wiki/Dot_product

Answer 10

Pardon me, I guess it is that simple. :)

Answer 11

lol