User:Geoffrey
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Fun stuff from Mathematica's TeXForm command...the derivatives of the trigonometric functions.
<math> \begin{matrix} \sin (x) & \cos (x) & -\sin (x) \\ \cos (x) & -\sin (x) & -\cos (
x) \\ \tan (x) & {\sec (x)}^2 & 2\,{\sec (x)}^2\,\tan (x) \\ \csc (
x) & -\left( \cot (x)\,\csc (x) \right) & {\cot (x)}^2\,\csc (x) +
{\csc (x)}^3 \\ \sec (x) & \sec (x)\,\tan (x) & {\sec (x)}^3 +
\sec (x)\,{\tan (x)}^2 \\ \cot (x) & -{\csc (x)}^2 & 2\,\cot (x)\,
{\csc (x)}^2 \\ \end{matrix}
<math>
I, Geoffrey used to be a wikipediholic (score: 74/261) - though I don't edit much, I read a lot. My first edit here was on 13 January 2003 under the IP address 208.180.92.88 (http://www.wikipedia.org/w/wiki.phtml?title=Special:Contributions&target=208.180.92.88); I joined on 20 January 2003. Most edits I do are small grammar fixes, reformatting, etc.
I also do some edits on Wikibooks (http://www.wikibooks.org).
Articles I have worked on considerably
- ...among others.
Contact
My IP address almost always is the resolution of geoffrey.homeip.net (unless it changes before I update the record), if you'd ever need it.
AIM: geoffreyerffoeg
Leave me a message on /talk and I'll find it in between a few days to a month.