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Lambert W Function (hp-42s)
06-11-2020, 10:42 AM
Post: #20
RE: Lambert W Function (hp-42s)
(06-11-2020 09:20 AM)Werner Wrote:  
Code:
17 STO+ ST Y @    y'    y'+e^2    a    a

Thanks ! This is more than I expected Smile
Now, we can get W both ways, directly from the stack

1e100
XEQ "eW"   ; eW = 4.44754573894e97
LN         ; W = LN(eW) = 224.843106445
R↓         ; a = 1e100
÷          ; W = a / eW = 224.843106445

Or, to check its accuracy, from definition W eW - a = 0

1e100 XEQ "eW" LN × −     → 0
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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) - 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) - Juan14 - 05-18-2020, 10:51 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) - Werner - 05-23-2020, 04:20 AM
RE: Lambert W Function (hp-42s) - Werner - 06-11-2020, 05:17 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) - Werner - 09-30-2020, 09:12 AM
RE: Lambert W Function (hp-42s) - Werner - 10-02-2020, 03:02 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) - 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) - 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) - 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) - lyuka - 10-02-2020, 05:44 AM
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) - 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) - lyuka - 11-09-2020, 08:30 AM



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