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On Mon, 15 Oct 2001, Lennart Augustsson wrote:
> Why not provide defaults for the inverse functions as well?
>
> asinh x = log (x + sqrt (1+x*x))
> acosh x = log (x + (x+1) * sqrt ((x-1)/(x+1)))
> atanh x = log ((x+1) / sqrt (1 - x*x))
That's a good idea too.
Is there a reason for defining acosh as above instead of
acosh x = log(x + sqrt(x*x-1))
- --
Russell O'Connor [EMAIL PROTECTED]
<http://www.math.berkeley.edu/~roconnor/>
``This is not a time, as it is never a time, to seek vengeance, but a
time to seek the courage to forgive'' -- George W. Bush
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