HP-35 origin
06-18-2018, 11:05 PM
Post: #10
 brickviking Senior Member Posts: 336 Joined: Dec 2014
RE: HP-35 origin
(06-18-2018 07:47 PM)Harald Wrote:
(06-18-2018 12:02 AM)brickviking Wrote:  If I took that phrase literally (Pi !!!), HP-50G calculates that to be 9.99999999999 E499. Somehow, I think even HP wouldn't be that crazy. Pi !! came to about 7380.55555766, and Pi! comes to 7.1881-ish, or so my HP-34C told me back in the day. That might be closer to the scale that HP was originally thinking of.

(Post 244)

When did Pi become a natural number? Factorial is only defined for natural numbers.

While that's true, certain factorial implementations (hp34c, HP48-series, HP-50G and others) interpolate non-integer results by using the Gamma function, as the factorial function is merely the integer-based special case of the Gamma function. Pretty much: $$n! = Γ(n+1)$$, if I remember rightly, and I'm sorry if I can't get that Gamma to come out correctly. I had fun trying to generate the inverse... of course that's not defined anywhere mathematically, so I was told.

(Post 245)

Regards, BrickViking
HP-50g |Casio fx-9750G+ |Casio fx-9750GII (SH4a)
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 Messages In This Thread HP-35 origin - hibiki - 06-16-2018, 10:58 PM RE: HP-35 origin - TomC - 06-17-2018, 05:56 PM RE: HP-35 origin - mcquiggi - 06-17-2018, 06:15 PM RE: HP-35 origin - drdbthompson - 06-17-2018, 06:57 PM RE: HP-35 origin - brickviking - 06-18-2018, 12:02 AM RE: HP-35 origin - mcquiggi - 06-18-2018, 12:36 AM RE: HP-35 origin - Harald - 06-18-2018, 07:47 PM RE: HP-35 origin - brickviking - 06-18-2018 11:05 PM RE: HP-35 origin - Gerson W. Barbosa - 06-19-2018, 08:15 AM RE: HP-35 origin - ttw - 12-10-2018, 04:00 AM RE: HP-35 origin - StephenG1CMZ - 06-19-2018, 10:22 AM RE: HP-35 origin - Thomas Okken - 06-19-2018, 11:09 AM RE: HP-35 origin - brickviking - 06-20-2018, 07:31 PM RE: HP-35 origin - Gerson W. Barbosa - 12-10-2018, 02:41 AM RE: HP-35 origin - badaze - 06-17-2018, 08:23 PM RE: HP-35 origin - Valentin Albillo - 06-18-2018, 10:27 PM RE: HP-35 origin - Steve Simpkin - 06-19-2018, 01:26 AM RE: HP-35 origin - Didier Lachieze - 06-19-2018, 05:29 AM RE: HP-35 origin - EdS2 - 06-19-2018, 07:40 AM RE: HP-35 origin - KimH - 12-06-2018, 01:29 PM

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