*a*

**P**|| = |

*a| ||*

**P**

*||*is completely beyond me. Maybe its just the normalized notation thats throwing me off but why the root sum of a^2 P^2 is |

*a| ||*

**P**

*||*confuses me. Why do the variables get normalized when the square root is taken, if I'm writing that right (dont know how to post mathematical notations)?

Anyone know of a good place to get the gap between highschool math and this book filled in? Ill be taking university math courses in the fall as prep for 3d game programming but for now Id like to work through this book.

Thanks,

Ryan.