HP 50g: Integration of EXP(-X^2)
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From: John H Meyers on 22 Apr 2008 07:58 On Mon, 21 Apr 2008 22:30:34 -0500: > That is just one of John H Meyers' signature lines. It stands for the > rightshift "OFF" (ON key) combination that turns the calculator off. > As far as I can tell, that means he actually tested what he talked > about on his calculator, and since he is done, he turns it off. Did anyone ever have a battery-operated "coffin" coin bank, which, when a coin was placed on a slot on top, would start rocking, then a lid would open and ghoulish hand would emerge, reach up, snatch the coin, and then retreat back into the "coffin," thus closing the lid and turning itself off? That's [r->] [OFF] --- Everyone has a USB mouse, but who has a USB hamster? http://www.youtube.com/watch?v=z9hnZX6eyTA http://www.youtube.com/watch?v=5E157IlC_3o Intel vs. AMD (do not do this in-flight) http://www.youtube.com/watch?v=XgOmMAasqto http://www.youtube.com/watch?v=wSALep8QZ84 [WMD?] (how about an overclocked 49G+/50G?) ..
From: John H Meyers on 22 Apr 2008 08:14 On Mon, 21 Apr 2008 17:14:08 -0500, Bjoern Schliessmann wrote: >> '\.S(-\oo,\oo,EXP(-SQ(X)),X)' \->NUM >> Result: 1.7724538509 >> Flags: { #7881A10201615FF1h #0 #5150410A214020h #0 } > Unfortunately, this gave me an overflow error just as before ... You didn't first store the flag list (STOF command). It will suffice to first do the CASCFG command, also clear flags -20 and -21 (Underflow/Overflow). Of course, we already know that the answer is Sqrt(pi), but just want to get a "second opinion" from calculators that know more than we do :) [r->] [OFF]
From: Bjoern Schliessmann on 22 Apr 2008 09:18 John H Meyers wrote: > On Mon, 21 Apr 2008 17:14:08 -0500, Bjoern Schliessmann wrote: >> Unfortunately, this gave me an overflow error just as before ... > > You didn't first store the flag list (STOF command). Ah, ok! > It will suffice to first do the CASCFG command, > also clear flags -20 and -21 (Underflow/Overflow). Well, what do you know, that did it! :) Thank you very much. I already noticed the flag, but I didn't realize it could matter. > Of course, we already know that the answer is Sqrt(pi), > but just want to get a "second opinion" from calculators > that know more than we do :) Er, sure ;) Just wanted to try a Ti-optimized textbook problem on a 50g. > [r->] [OFF] (\me is a little bit embarassed) Regards, Bj�rn -- BOFH excuse #219: Recursivity. Call back if it happens again.
From: Bjoern Schliessmann on 22 Apr 2008 09:21 Thomas Becker wrote: > Bjoern Schliessmann WROTE: >> John H Meyers wrote: > >>> [r->] [OFF] >> >> I'm sorry, I don't understand. What should be turned off, is it >> about base conversions? > > I vote for having this text on the next probe to outer space, who > is with me? Argl, please no :) The aliens will think all of us are /that/ slow on the uptake. OTOH, this could very well be a strategic advantage ... Anyway, thanks everyone! Regards, Bj�rn -- BOFH excuse #259: Someone's tie is caught in the printer, and if anything else gets printed, he'll be in it too.
From: username localhost on 22 Apr 2008 10:14
On Apr 22, 7:58 am, "John H Meyers" <jhmey...(a)nomail.invalid> wrote: > On Mon, 21 Apr 2008 22:30:34 -0500: > > > That is just one of John H Meyers' signature lines. It stands for the > > rightshift "OFF" (ON key) combination that turns the calculator off. > > As far as I can tell, that means he actually tested what he talked > > about on his calculator, and since he is done, he turns it off. > > Did anyone ever have a battery-operated "coffin" coin bank, > which, when a coin was placed on a slot on top, would start rocking, > then a lid would open and ghoulish hand would emerge, reach up, > snatch the coin, and then retreat back into the "coffin," > thus closing the lid and turning itself off? > > That's [r->] [OFF] > VISTA: You just equated a pictographic representation of the key presses used to turn a calculator off (a method of conserving energy) with a cool looking, but definitely not energy efficient coin storage device. Cancel or Allow? |