Lambert W Function (hp-42s)

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Lambert W Function (hp-42s)

09-30-2020, 09:12 AM

Post: #27

Werner Offline

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Posts: 899
Joined: Dec 2013

RE: Lambert W Function (hp-42s)

(09-28-2020 10:01 PM)Albert Chan Wrote: With Free42, tried x = -1/e:

1 [+/-] [e^X] [+/-] XEQ "eW" → 0.367879441171

It worked, but result "only" have 17 good digits.

That is a direct consequence of using y'=y'+(y'-y)^2 as a stopping criterion..
You should do 1 extra Newton-Rhapson step
Werner

41CV†,42S,48GX,49G,DM42,DM41X,17BII,15CE,DM15L,12C,16CE

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Messages In This Thread

Lambert W Function (hp-42s) - Juan14 - 05-16-2020, 04:07 PM

RE: Lambert W Function (hp-42s) - Werner - 05-17-2020, 07:56 AM

RE: Lambert W Function (hp-42s) - J-F Garnier - 05-17-2020, 08:09 AM

RE: Lambert W Function (hp-42s) - Werner - 05-17-2020, 08:15 AM

RE: Lambert W Function (hp-42s) - Gerald H - 05-17-2020, 09:29 AM

RE: Lambert W Function (hp-42s) - Werner - 05-18-2020, 08:04 AM

RE: Lambert W Function (hp-42s) - Juan14 - 05-17-2020, 12:12 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 05-18-2020, 03:54 PM

RE: Lambert W Function (hp-42s) - Juan14 - 05-18-2020, 10:51 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 05-19-2020, 12:29 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 05-20-2020, 03:25 PM

RE: Lambert W Function (hp-42s) - Juan14 - 05-21-2020, 12:09 AM

RE: Lambert W Function (hp-42s) - Werner - 05-22-2020, 11:39 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 05-23-2020, 12:43 AM

RE: Lambert W Function (hp-42s) - Werner - 05-23-2020, 04:20 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 06-11-2020, 03:27 AM

RE: Lambert W Function (hp-42s) - Werner - 06-11-2020, 05:17 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 06-11-2020, 08:12 AM

RE: Lambert W Function (hp-42s) - Werner - 06-11-2020, 09:20 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 06-11-2020, 10:42 AM

RE: Lambert W Function (hp-42s) - lyuka - 09-28-2020, 04:06 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 09-28-2020, 10:01 PM

RE: Lambert W Function (hp-42s) - Werner - 09-30-2020 09:12 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 09-30-2020, 05:28 PM

RE: Lambert W Function (hp-42s) - Werner - 10-02-2020, 03:02 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-02-2020, 05:55 PM

RE: Lambert W Function (hp-42s) - Werner - 09-30-2020, 07:08 AM

RE: Lambert W Function (hp-42s) - lyuka - 09-29-2020, 09:21 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 09-29-2020, 07:07 PM

RE: Lambert W Function (hp-42s) - lyuka - 09-29-2020, 11:17 PM

RE: Lambert W Function (hp-42s) - lyuka - 09-30-2020, 11:04 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 09-30-2020, 05:40 PM

RE: Lambert W Function (hp-42s) - lyuka - 09-30-2020, 07:16 PM

RE: Lambert W Function (hp-42s) - Werner - 10-01-2020, 09:37 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-01-2020, 12:33 PM

RE: Lambert W Function (hp-42s) - Werner - 10-01-2020, 01:39 PM

RE: Lambert W Function (hp-42s) - lyuka - 10-01-2020, 06:25 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-01-2020, 10:25 PM

RE: Lambert W Function (hp-42s) - lyuka - 10-02-2020, 05:44 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-02-2020, 07:29 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-03-2020, 04:31 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-03-2020, 05:29 PM

RE: Lambert W Function (hp-42s) - lyuka - 10-03-2020, 07:56 PM

RE: Lambert W Function (hp-42s) - Werner - 10-05-2020, 08:03 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-05-2020, 03:20 PM

RE: Lambert W Function (hp-42s) - lyuka - 10-05-2020, 06:09 PM

RE: Lambert W Function (hp-42s) - Werner - 10-06-2020, 06:16 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 10-21-2020, 03:05 PM

RE: Lambert W Function (hp-42s) - lyuka - 11-09-2020, 08:30 AM

RE: Lambert W Function (hp-42s) - Bill Triplett - 08-24-2022, 09:48 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 12-29-2022, 04:17 AM

RE: Lambert W Function (hp-42s) - Albert Chan - 12-29-2022, 12:21 PM

RE: Lambert W Function (hp-42s) - Albert Chan - 12-29-2022, 08:01 PM

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