-=The Visible Dave Project=-

how did u find my site?
you told me about it
friend told me about it
search engine results
typed randomly;found myself here
other
 

answer random online questions?
i'm doing it now.
never, I would never.
 

Computers are useless. They can only give you answers.
--Pablo Picasso (1881 - 1973)

$$\cos x = \sum\limits_{n = 0}^\infty {\frac{{\left( { - 1} \right)^n x^{2n} }}{{\left( {2n} \right)!}}}$$