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ar is for area (arc is for arcus) | 200 comments | Create New Account
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ar is for area (arc is for arcus)
Authored by: Anonymous on Tuesday, May 29 2012 @ 01:05 AM EDT

arsinh is correct.

The inverses of the hyperbolic functions are the area hyperbolic functions. The names hint at the fact that they give the area of a sector of the unit hyperbola x2 − y2 = 1 in the same way that the inverse trigonometric functions give the arc length of a sector on the unit circle x2 + y2 = 1. The abbreviations arcsinh, arccosh, etc., are commonly used, even though they are misnomers, since the prefix arc is the abbreviation for arcus, while the prefix ar stands for area.

That's from Wikipedia on Inverse hyperbolic function.

[ Reply to This | Parent | # ]

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