Estimating PI without a calculator

04152014, 06:49 PM
Post: #1




Estimating PI without a calculator
It seems we don't need RPN.
https://medium.com/thephysicsarxivblog/c1eb776193ef Just grab your pump action shotgun and use the Monte Carlo method. 

04152014, 07:57 PM
Post: #2




RE: Estimating PI without a calculator
Worked great for exams where calculators weren't permitted. I nearly got expelled/arrested trying to do e^x, though.


04152014, 09:15 PM
(This post was last modified: 04152014 09:35 PM by everettr.)
Post: #3




RE: Estimating PI without a calculator
I hear these fellows are working on a followup article describing their results for a variation on an old classic. The preliminary title is, "Buffon's Big Bore Blaster".


04162014, 01:07 AM
Post: #4




RE: Estimating PI without a calculator
Or if you just have a 4 function simple one...
An reasonably accurate estimate can be done by taking the sequence: 1 1 3 3 5 5 and putting the old division box / in the middle (sorry for the poor drawing but this way helps remember to process for some) so that you have: ____ 113 / 355 or rather, 355  113 to get something like: 3.14159292035 (on my HP50) On a clear disk, you can seek forever. 

04162014, 02:41 AM
Post: #5




RE: Estimating PI without a calculator
(04152014 06:49 PM)Don Williams Wrote: It seems we don't need RPN. Quite a drastic methodology, wouldn't you say. 

04162014, 02:41 AM
Post: #6




RE: Estimating PI without a calculator  
04162014, 02:46 AM
Post: #7




RE: Estimating PI without a calculator  
04162014, 03:50 AM
Post: #8




RE: Estimating PI without a calculator
An estimate for pi without a calculator. Using my Memory Recall function I get 3.14, or just 3 if it's been a rough week.


04162014, 04:30 AM
Post: #9




RE: Estimating PI without a calculator  
04162014, 04:59 PM
Post: #10




RE: Estimating PI without a calculator
Quote:Then just keep hitting the [R/S] key. No need to do that. Here's an old thread about Viete's method and a really small, self stopping program. katie 

04172014, 12:18 AM
Post: #11




RE: Estimating PI without a calculator
(04162014 02:41 AM)Thomas Klemm Wrote:(04152014 06:49 PM)Don Williams Wrote: It seems we don't need RPN. I'm struggling with the concept of hitting an R/S key (or any other key, for that matter) when the topic is about estimating pi WITHOUT a calculator. Just to be precise, I took my CastellNovo Duplex 2/83N, aligned the 22 on the C scale with 7 on the D scale, moved the cursor over to the 10 on the D scale, and bold as brass on the C scale was the symbol for pi. So there... 

04172014, 05:15 AM
Post: #12




RE: Estimating PI without a calculator  
04192014, 09:29 PM
Post: #13




RE: Estimating PI without a calculator  
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