A numbers/equation/math-tricks request...

[fatdave]

As I am trying to increase my skill in various forms of mathematics/calculus/trig/geometry/whatever, as well as in PHP, I would like to request some suggestions or questions for things for me to calculate, using PHP as my calculator.

It seems really redundant, as so many math functions are immediately available in PHP. However, the stringing together of functions in search of a result is really what I'm looking for.

So please, throw whatever you got at me. This could include statistical simulations, or word problems, or game theory, or whatever. Surprise me. Punish me (and you most likely will, as I forget lots of math "rules", except for maybe "Please My Dear Aunt Sally").

A very simple example is my post in this thread. I learned something new about both math and PHP.

I would prefer something that has at least a little bit of "math magic" in it, as opposed to straight-up boring equations.

Part of this is to teach me more PHP, part of it is to teach my about math, part of it is just for entertainment.