Module 1 : A Crash Course in Vectors
Lecture 1 : Scalar And Vector Fields
  The vector triple product of $\vec A, \vec B$ and $\vec C$ is defined by $\vec A\times(\vec B\times\vec C)$. Since cross product of two vectors is not commutative, it is important to identify which product in the combination comes first. Thus $\vec A\times(\vec B\times\vec C)$ is not the same as $(\vec A\times \vec B)\times\vec C$.
 
 
  Example 1
  Exercise 4
   
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