Message-ID: <20020325201003.J11613@sellwood.reed.edu>
Date: 2002-03-26T04:10:03Z
From: Albyn Jones
Subject: arsinh
In-Reply-To: <Pine.LNX.4.31.0203252126040.15318-100000@gannet.stats>; from ripley@stats.ox.ac.uk on Mon, Mar 25, 2002 at 09:28:13PM +0000
On Mon, 25 Mar 2002, Ben Bolker wrote:
> Do you mean the inverse hyperbolic sin (arcsinh)? In my experience the
> hyperbolic functions are usually pronounced with a "ch" (as in "church")
> for tanh and sinh or "sh" (for cosh) at the end: "ark-sinch" would be a
> transcription.
the inverse hyperbolic sin is often called "arsinh" (pronounced ar-sinch)
rather than "arcsinh" for good reason.
arcsin(x) is the _arc_ (ie angle) with sin equal to x
arsinh(x) is an _area_ corresponding to a sinh of x
albyn
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http://www.reed.edu/~jones Albyn Jones jones at reed.edu
Reed College, Portland OR 97202 (503)-771-1112 x7418
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