## Poll

 I love math! 1 vote (6.25%) I'm excited! No votes (0%) I'm giddy! No votes (0%) I'm aroused. 1 vote (6.25%) Math is fun! No votes (0%) Math ist wunderbar! 2 votes (12.5%) I'm eating pie to celebrate. 5 votes (31.25%) I'm eating a pizza pie. 3 votes (18.75%) My first calculus teacher is my hero. 1 vote (6.25%) I'm a bigot. 8 votes (50%)

16 members have voted

gamerfreak
Joined: Dec 28, 2014
• Posts: 2827
March 15th, 2019 at 4:55:20 PM permalink
Quote: DogHand

gamerfreak,

Pi IS a real number, but because it is irrational, the decimal expansion of its digits never repeats. For a rational number (that is, a number that is the ratio of two integers), the digits eventually begin to repeat ad infinitum.

Hope this helps!

Dog Hand

Yes, but how many repeating digits before you can be sure it’s the end of the number?

Like mentioned/linked previously, there are spans of 12/13 repeating digits.
sammydv
Joined: Mar 25, 2016
• Posts: 553
March 16th, 2019 at 6:24:29 PM permalink
Quote: gamerfreak

Google has broken the word record by calculating Pi to 31.4 trillion digits

Google ran like crap that day.
What google really did was have the worlds most resource intensive hogging AD for the google cloud service.
What a waste of the planets energy resources.
odiousgambit
Joined: Nov 9, 2009
• Posts: 7963
March 17th, 2019 at 2:11:27 AM permalink
Quote: TomG

One of the very first values for c/d used in human history was 3. So I vote to celebrate Pi for the entire month.

I still use "3" more often than any other pi number, in order to estimate the circumference of a tree [tho just as likely to use 1/pi, thus 1/3 , for an estimate of the diameter knowing the approx. circumf.]

It's a fallacy to think you are getting a more accurate number by taking pi out to more decimals if you are estimating diameter or circumference to begin with

at the moment I don't remember why I need that sometimes, though curiosity about a nice big tree is it often I think
the next time Dame Fortune toys with your heart, your soul and your wallet, raise your glass and praise her thus: “Thanks for nothing, you cold-hearted, evil, damnable, nefarious, low-life, malicious monster from Hell!” She is, after all, stone deaf. ... Arnold Snyder
odiousgambit
Joined: Nov 9, 2009
• Posts: 7963
March 17th, 2019 at 2:24:12 AM permalink
this got me wondering what people used in ancient times who needed more accuracy, they must have used 3 and one seventh

according to the calculator I usually use, this is an error of 0.0012644892673496615 in excess of actual pi
the next time Dame Fortune toys with your heart, your soul and your wallet, raise your glass and praise her thus: “Thanks for nothing, you cold-hearted, evil, damnable, nefarious, low-life, malicious monster from Hell!” She is, after all, stone deaf. ... Arnold Snyder
Joeman
Joined: Feb 21, 2014
• Posts: 1390
March 17th, 2019 at 9:55:20 AM permalink
Hey, can we celebrate Pi Day all over again on the 22nd of July (22/7)?
"Dealer has 'rock'... Pay 'paper!'"
TomG

Joined: Sep 26, 2010
• Posts: 1652
March 17th, 2019 at 10:11:40 AM permalink
Quote: Joeman

Hey, can we celebrate Pi Day all over again on the 22nd of July (22/7)?

Absolutely. You can also celebrate it in January (3.1)
TomG

Joined: Sep 26, 2010
• Posts: 1652
March 17th, 2019 at 10:13:19 AM permalink
Quote: gamerfreak

Yes, but how many repeating digits before you can be sure it’s the end of the number?

Like mentioned/linked previously, there are spans of 12/13 repeating digits.

Use long division to solve 1 ÷ 3 and you'll see you can sometimes be sure after a number repeats one time
Lovecomps
Joined: Aug 12, 2018
• Posts: 208
March 17th, 2019 at 1:40:39 PM permalink
FYI, pi isn't a number at all. It's a ratio.
The best things in life are not free.
odiousgambit
Joined: Nov 9, 2009
• Posts: 7963
March 17th, 2019 at 2:54:09 PM permalink
edited out something that made no sense

I went through a thing, during cocktail hour, but realize now that 3 and one seventh = 22/7

btw some more dead sea scrolls turned up, and there's some Genesis stuff in the new ones about pi that had been lost:
Quote:

and then God said "Let the ratio of the circumference of a circle to its diameter equal about 22/7, but actually make it an irrational number, to drive certain types off the deep end"

PS you can diss 22/7 if you want to, but it represents less error than 3.14

error of 0.0015926535897932 [for 3.14] versus 0.0012644892673496 [for 22/7]
Last edited by: odiousgambit on Mar 17, 2019
the next time Dame Fortune toys with your heart, your soul and your wallet, raise your glass and praise her thus: “Thanks for nothing, you cold-hearted, evil, damnable, nefarious, low-life, malicious monster from Hell!” She is, after all, stone deaf. ... Arnold Snyder
miplet
Joined: Dec 1, 2009
• Posts: 1871
Thanks for this post from:
March 17th, 2019 at 4:43:07 PM permalink
Quote: odiousgambit

edited out something that made no sense

I went through a thing, during cocktail hour, but realize now that 3 and one seventh = 22/7

btw some more dead sea scrolls turned up, and there's some Genesis stuff in the new ones about pi that had been lost:

PS you can diss 22/7 if you want to, but it represents less error than 3.14

error of 0.0015926535897932 [for 3.14] versus 0.0012644892673496 [for 22/7]

http://turner.faculty.swau.edu/mathematics/materialslibrary/pi/pirat.html lists lots of fractions.
“Man Babes” #AxelFabulous