10v = 
(  20 ,  30 ,  40 )

v/10 = 
(  0.2,  0.3,  0.4)

v+w = 
(  7  , -3  ,  11 )

v-w = 
( -3  ,  9  , -3  )

dot(v,w) = 
  20 

cross(v,w) = 
(  45 ,  6  , -27 )

cross(w,v) = 
( -45 , -6  ,  27 )

v^2 = 
  29 

v^3 = 
(  58 ,  87 ,  116)

|v| = 
  5.39

|w| = 
  10.5

Unitvector(v) = 
(  0.371,  0.557,  0.743)

Angle from v to w (rad) = 
  1.21

Angle from v to w (deg) = 
  69.3

v*w = 
  10  -12   14 
  15  -18   21 
  20  -24   28 

w*v = 
  10   15   20 
 -12  -18  -24 
  14   21   28