Question

r = <9, -7, -8>, v = <3, 4, 7>, w = <6, -9, 7>

v ⋅ w

Answer 1

vector dot product is a scalar

Answer 2

what does that mean?

Answer 3

\[v * w = <v _{x}, v _{y,} v _{z}> * <w _{x}, w _{y} , w _{z}>\]

Answer 4

\[= v _{x}w _{x} + v _{y} w _{y} + v _{z}w _{z}\]

Answer 5

does that look familiar?

Answer 6

no @DanJS

Answer 7

Just have to fill in the numbers,, ,when you dot product two vectors together... jut add together the product of each dimensions coordinates....

v * w = 3*6 + 4*(-9) + 7*7 = ...

Answer 8

\[v \cdot w \] means take the dot product of vector v and vector w.
nice explanation @DanJS :)