Evaluate the expression: v ⋅ w

given the vectors:
r = < 5, -5, -2> ;
v = < 2, -8, -8> ;
w = < -2, 6, -5>

Value of v.w equals:

-12

Step-by-step explanation:

If we are given two vectors a and b as:

a=<x1,x2,x3> and b=<y1,y2,y3>

Then, a.b equals:

a.b=x1y1+x2y2+x3y3

Here, v = <2, -8, -8>

and w = <-2, 6, -5>

v.w= 2×(-2)+(-8)×6+(-8)×(-5)

    = -4-48+40

   = -4-8

  = -12

Hence, Value of v.w equals:

-12

hi,

you half the rectangle that you ae asking about so then you would see the scale factor of 1/2 the one u have selected, the one on top is half.

hope this !