ArcCosh

[Goober]

I cant remember how to evaluate Arccosh on my HP. Can somebody help.

goober

[Thomas Okken]

It depends... Do you know if your HP has a built-in acosh function? If not, use acosh(x)=ln(x+sqrt(x^2-1)).


If it does, or if you're not sure, let us know what model you have and I'm sure someone can help you out. (In case you have an HP-42S, the ACOSH function is not in any menu (other than the FCN catalog); I recommend to use ASSIGN to assign it to a CUSTOM menu key if you have to use it frequently.)

- Thomas

Edited: 25 Apr 2005, 8:34 p.m.