Question

Evaluate the expression.

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

v ⋅ w
explain?

Answer 1

HI!!

Answer 2

they are asking for the dot product right?

Answer 3

yes , but how do you do the dot product

Answer 4

and Hi!

Answer 5

\[<x_1,x_2,x_3>\cdot <y_1,y_2,y_3>=x_1\times y_1+x_2\times y_2+x_3\times y_3\] i.e. multiply and add
that is all

Answer 6

so its 17!

Answer 7

\[27-18+8\]

Answer 8

yeah