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http://www.bartleby.com/61/87/C0788700.html[
(Interestingly, I found a site that says that the maple programming language uses ctn and another that says it uses cot - perhaps both are correct and there's been a change. One Mathematica page explicitly says it's cot AND NOT ctn in that language.)
And people are actually using the notation, too http://web.mit.edu/wwmath/calculus/differentiation/trig.html3
http://www.mansd.org/memorial/mainsite/bb/other/nhoule/subdir/math.html
What I'm not sure of is how this varies - regional, perhaps, or maybe subject area (perhaps engineers are more likely to use ctn over cot), or perhaps even temporally (in the process of changing).
Similar notational deviance in a program language would be the use of the caret for exponentiation in some languages (fortran, pascal, vb, even quickbasic) vs double asterisk (perl, and the older versions of basic). [C, for example, doesn't even HAVE an exponentiation operator! It has the exp function, but no operator!]
Another notational oddity is that for the natural logarithm. Commonly ln or LN denoted natural log, while log denoted "log base 10" unless otherwise stated. Nowadays, I've seen class notes and handouts, etc, in which log denotes "log base e" unless otherwise stated.
On a slight, er, 'tangent,' one of the most curious terminological impasses I've encountered was the definition of a "Natural Number" which has changed over the years. When a woman first indicated in a usenet group that what she learned was that the naturals were the same as the integers I thought sure she was mistaken.
The whole thread is at http://makeashorterlink.com/?H32121033
k
Entire Thread Subject Posted By Posted dr rav 01/21/03 05:27 PM Re: dr wentworth 01/21/03 05:36 PM Re: dr Faldage 01/21/03 05:42 PM Re: dr Wordwind 01/21/03 06:04 PM Re: dr wwh 01/21/03 06:17 PM Re: Dr or Dr. wwh 01/21/03 06:20 PM Re: dr Faldage 01/21/03 06:33 PM Re: dr wwh 01/21/03 06:54 PM Re: dr Faldage 01/21/03 07:23 PM Re: dr wwh 01/21/03 07:43 PM Re: dr AnnaStrophic 01/21/03 11:25 PM Re: dr rav 01/22/03 01:55 PM Re: dr TheFallibleFiend 01/21/03 09:43 PM Re: dr johnjohn 01/21/03 11:25 PM Re: dr wwh 01/22/03 01:34 AM Re: dr Faldage 01/22/03 11:05 AM The RhubarbCommando speaks out for Britain. RhubarbCommando 01/22/03 12:24 PM Re: dr boronia 01/22/03 02:03 PM Post deleted by Wordwind Wordwind 01/22/03 02:10 PM Re: dr rkay 01/23/03 09:19 AM Re: dr Capfka 01/23/03 11:19 AM Re: dr Bean 01/22/03 02:55 PM Re: dr TheFallibleFiend 01/22/03 03:14 PM Re: dr Bean 01/22/03 04:05 PM Re: dr TheFallibleFiend 01/22/03 07:02 PM Re: dr Faldage 01/22/03 07:32 PM Re: dr TheFallibleFiend 01/22/03 08:23 PM Re: dr Faldage 01/22/03 08:29 PM Re: dr Bean 01/23/03 11:34 AM math emanuela 01/28/03 04:54 PM answer emanuela 01/28/03 04:55 PM Re: answer Faldage 01/28/03 06:38 PM Re: answer wwh 01/28/03 06:46 PM Re: answer Faldage 01/28/03 07:08 PM Re: answer wwh 01/28/03 07:45 PM Re: answer Faldage 01/28/03 07:53 PM Re: answer Alex Williams 01/28/03 10:38 PM Re: answer Bean 01/28/03 11:46 PM Re: answer tsuwm 01/29/03 12:11 AM Post deleted by Wordwind Wordwind 01/29/03 12:16 AM e Alex Williams 01/29/03 02:04 AM Re: e Faldage 01/29/03 11:05 AM Re: e Bean 01/29/03 11:10 AM Re: e Bean 01/29/03 11:14 AM Re: e TheFallibleFiend 01/29/03 11:50 AM Re: e Alex Williams 01/29/03 01:48 PM Re: e TheFallibleFiend 01/29/03 02:10 PM Re: e Faldage 01/29/03 02:36 PM Re: e Bean 01/29/03 02:49 PM Re: one = non-one tsuwm 01/29/03 02:58 PM Re: one = non-one Bean 01/29/03 03:12 PM Re: e Faldage 01/29/03 03:16 PM Re: e Bean 01/29/03 03:54 PM Re: e Alex Williams 01/29/03 04:13 PM Re: e tsuwm 01/29/03 04:18 PM Re: e Faldage 01/29/03 04:33 PM Re: e Alex Williams 01/29/03 05:04 PM Re: e Buffalo Shrdlu 01/29/03 05:32 PM Re: e Alex Williams 01/29/03 06:04 PM Re: e Faldage 01/29/03 06:06 PM infinity emanuela 01/30/03 06:36 AM Re: infinity Alex Williams 01/30/03 10:40 AM Re: infinity Bean 01/30/03 11:24 AM Re: numbers real and rational Faldage 01/30/03 12:03 PM Re: numbers real and rational Alex Williams 01/30/03 01:01 PM Re: numbers real and rational emanuela 01/30/03 01:56 PM Re: numbers real and rational Faldage 01/30/03 02:00 PM . Alex Williams 01/30/03 03:22 PM Re: . Faldage 01/30/03 03:31 PM Re: e Bean 01/29/03 04:32 PM Re: e Bean 01/29/03 02:45 PM math is not an exact science wofahulicodoc 01/30/03 03:31 PM numbers emanuela 01/30/03 04:54 PM Re: math Faldage 01/28/03 05:15 PM Re: math wwh 01/28/03 06:00 PM Re: math musick 01/28/03 06:16 PM parallel lines emanuela 01/29/03 01:31 PM 0,99999..... emanuela 01/29/03 01:17 PM Re: dr vika 01/28/03 04:42 PM Re: dr rav 01/22/03 08:51 PM Re: dr modestgoddess 01/23/03 08:32 PM Re: dr Faldage 01/23/03 08:40 PM Re: dr modestgoddess 01/23/03 08:44 PM Re: dr Bean 01/24/03 12:09 AM Re: dr Capfka 01/24/03 08:46 PM Re: dr Faldage 01/27/03 07:56 PM Re: dr AnnaStrophic 01/27/03 07:58 PM Re: duhing … and three dots Faldage 01/27/03 08:08 PM Re: duhing … and three dots wwh 01/27/03 08:15 PM Re: duhing … and three dots Faldage 01/27/03 08:18 PM Re: dr tsuwm 01/27/03 08:04 PM
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