Question

Evaluate the expression.

r = <5, 9, -4>, v = <3, 3, -8>, w = <9, -6, -1>

v ⋅ w

Answer 1

let x=<a,b,c> and y=<d,e,f>
then x dot y=ad+be+fc

Answer 2

multiply first components
multiply second components
multiply third components

then all the results of those products

Answer 3

<27,-18,8>

Answer 4

is that correct ? @freckles

Answer 5

dot product isn't a vector

Answer 6

it is just a scalar

Answer 7

you need to add the products together

Answer 8

17

Answer 9

??

Answer 10

yeah
\[v \cdot w=27-18+8=9+8=17\]

Answer 11

thanks again :)

Answer 12

np