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.(adsbygoogle = window.adsbygoogle || []).push({});

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

Thanks!

BiP

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

**Physics Forums | Science Articles, Homework Help, Discussion**