I have decided to post all my small questions in this thread. (because many of them don't deserve a thread of their own)
Also, this thread will probably end up containing an overview of ALL highschool math questions that I can think of, and just might become a useful resource for some guests. (or this thread might just die out after two questions...)
note: At the incistence of PH, I'm going to ask everybody to please stay on topic so this thread remains a math only discussion.
also note: To everyone (especially newbies), please do not post your questions on this thread.