Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Proving a relation between cross and dot products

  1. Oct 3, 2012 #1
    Another vector identity I have been trying to prove. My textbook lists this identity in "properties of cross products" without proving it. I have been trying to prove it, withou much luck, so some insight is appreciated.

    [tex] u \times (v \times w) = (u \cdot w)v - (u \cdot v)w [/tex]


  2. jcsd
  3. Oct 4, 2012 #2
    This belongs in the homework section.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook