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[WP-34S] DEG and RAD - diffs
06-06-2014, 05:53 PM (This post was last modified: 12-27-2023 01:03 AM by Thomas Klemm.)
Post: #26
RE: [WP-34S] DEG and RAD - diffs
(06-06-2014 05:27 PM)Dieter Wrote:  Since we are talking about hyperbolic functions I assume you refer to artahn x = 1/2 ln[(1+x)/(1–x)].

Nah, I think it's formula (20) of J. S. Walther's paper:

\(\ln w = 2 \tanh^{-1}(\frac{y}{x})\) where \(x=w+1\) and \(y=w-1\).

So it's just the other way round.
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Messages In This Thread
[WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 12:08 AM
RE: DEG and RAD - diffs - Paul Dale - 06-05-2014, 12:53 AM
RE: DEG and RAD - diffs - pito - 06-05-2014, 06:27 AM
RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 01:38 PM
RE: [WP-34S] DEG and RAD - diffs - Dieter - 06-05-2014, 11:12 AM
RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 06:04 PM
RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 07:57 PM
RE: [WP-34S] DEG and RAD - diffs - pito - 06-05-2014, 10:07 PM
RE: [WP-34S] DEG and RAD - diffs - Dieter - 06-06-2014, 05:27 PM
RE: [WP-34S] DEG and RAD - diffs - Thomas Klemm - 06-06-2014 05:53 PM
RE: [WP-34S] DEG and RAD - diffs - pito - 06-07-2014, 12:57 PM



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