-=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
 

which seems more true?
I have a brain.
I am a brain.
 

I never forget a face, but in your case I'll be glad to make an exception.
--Groucho Marx (1890 - 1977)

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