# Griffiths (3rd Edition), Chapter 01, Problem 1.5 Solution

## Problem 1.5 BAC-CAB rule

##### The problem asks you to
prove the BAC-CAB rule by writing out both sides in component form.
the BAC-CAB rule, which is $\vec{A} \times ( \vec{B} \times \vec{C} ) = \vec{B}( \vec{A} \cdot \vec{C} ) - \vec{C}( \vec{A} \cdot \vec{B})$$\vec{A} \times ( \vec{B} \times \vec{C} ) = \vec{B}( \vec{A} \cdot \vec{C} ) - \vec{C}( \vec{A} \cdot \vec{B})$