From: Josef 'Jupp' Schugt <jupp@...>
Date: 2003-08-25T05:16:03+09:00
Subject: Re: POLS and names of mathematical functions

Saluton!

* Rudolf Polzer; 2003-08-24, 14:46 UTC:
> Here (Frankfurt) they're called arcosh or arccosh (I saw both),
> arcsinh and arctanh. But it may depend on the professor.

'arccosh' and 'arcsinh' are nothing but mistakes.

arcsin x is a short for 'arc who's sinus is x'.
arsinh x is short for 'area who's sinus hyperbolicus is x'

(Precisely taken they are short for the latin equivalents).

arcsinh x would mean 'arc who's hyperbolic sinus is x' - which is
nonesense.

> Now there are *three* names.

Of which only two are correct.

Gis,

Josef 'Jupp' Schugt
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