round one *DING*

SolidusRaccoon · Post by **SolidusRaccoon** » Sat Apr 30, 2005 8:13 am

Calling Dr. Carter a liar?

Sharuuk · Post by **Sharuuk** » Sat Apr 30, 2005 9:55 am

SolidusRaccoon wrote:Calling Dr. Carter a liar?

Actually, I made an error....It's 3.1428571429....I left out the '7' when I posted. My bad..

Shaaruuk

Squeaky Bunny · Post by **Squeaky Bunny** » Sat Apr 30, 2005 10:20 am

It looks like this thread has turned into a pi throwing melee.

Wayfarer · Post by **Wayfarer** » Sat Apr 30, 2005 10:37 am

Shaaruuk, why does my calculator disagree with you?
It says pi = 3.141592654.

Sharuuk · Post by **Sharuuk** » Sat Apr 30, 2005 11:25 am

Wayfarer wrote:Shaaruuk, why does my calculator disagree with you?
It says pi = 3.141592654.

I have no idea. I used the calc in my HP PDA and got that particular answer using a floating decimal to 9 places.

I JUST NOW performed the same function on the built-in windows calculator and got:

pi = 3.1428571428571428571.......to infinity.

If you divide 22 by 7 in long division on paper the above answer is what you will get every time. Regardless of how many decimal places you calculate out to, the FIRST 6 numbers after the decimal will always be 142857.

Hmmmmm....I think I may have part of an answer. I just calculated pi setting the decimal fixed from 2 thru 9 places..the limit of my display. It seems that the lower decimal places required, the unit rounds up the last digit to the nearest whole (decimal place) number. If you only require 3 decimal places your calc rounds out to 3.143. And it's consistant. How your calc came up with the particular sequence you have I haven't a clue.

Shaaruuk

Wayfarer · Post by **Wayfarer** » Sat Apr 30, 2005 11:54 am

I hit the pi symbol on my calculator and pressed enter.
I'm thinking 22/7 must be an approximate. Looking pi up on the web, I also find the same answer as my calculator (though a lot of times to a great deal more digits).
Of course, then there's also the random survey I found of people voting for the value of pi. There were a number of interesting options and reasons, but in the end 42 won.
http://users.tkk.fi/~mnippula/votepi.html
(And yes, I'm supposed to be starting on paper-writing for finals - and stalling desperately for as long as I can!)

Sharuuk · Post by **Sharuuk** » Sat Apr 30, 2005 12:05 pm

You're using a scientific calc?

Oh well....I guess in this case we're both right. I've been using 3.14 as the value of pi since the mid 50's and it's served me too well to change to another value now.

Haven't forgotten about the music, just been really busy driving.

Shaaruuk

Wayfarer · Post by **Wayfarer** » Sat Apr 30, 2005 12:18 pm

TI-83. Had to get one for math in high school. Kept it because it's now the only one I like. Not to mention the fact that I discovered the draw function and ended up drawing and storing pictures on it.

And I do understand busy, no matter how little my recent posting frequency may reflect it.

SolidusRaccoon · Post by **SolidusRaccoon** » Sat Apr 30, 2005 1:24 pm

Heh, me version is right.

Sharuuk · Post by **Sharuuk** » Sat Apr 30, 2005 1:28 pm

SolidusRaccoon wrote:Heh, me version is right.

Yeah??? Well so's meen....er.. MINE!

pbbbbt

Shaaruuk

CasVeg · Post by **CasVeg** » Sat Apr 30, 2005 1:33 pm

Actually, pi is precisely equal to 4*(1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + . . .).

Calbeck · Post by **Calbeck** » Sat Apr 30, 2005 2:53 pm

Squeaky Bunny wrote:It looks like this thread has turned into a pi throwing melee.

Mmmm...banana cream math functions! -:9

SolidusRaccoon · Post by **SolidusRaccoon** » Sat Apr 30, 2005 3:42 pm

Sharuuk wrote:
SolidusRaccoon wrote:Heh, me version is right.
Yeah??? Well so's meen....er.. MINE! pbbbbt

Shaaruuk

MA!!!, git mah gun.

Kerry Skydancer · Post by **Kerry Skydancer** » Sat Apr 30, 2005 5:08 pm

Wayfarer wrote:I hit the pi symbol on my calculator and pressed enter.
I'm thinking 22/7 must be an approximate. Looking pi up on the web, I also find the same answer as my calculator (though a lot of times to a great deal more digits).
Of course, then there's also the random survey I found of people voting for the value of pi. There were a number of interesting options and reasons, but in the end 42 won.
http://users.tkk.fi/~mnippula/votepi.html
(And yes, I'm supposed to be starting on paper-writing for finals - and stalling desperately for as long as I can!)

22/7 is very much an approximation. It's the closest fractional approximation and was used in antiquity by cultures that hadn't figured out decimal points yet. There are geometric and algebraic ways to calculate the exact value (Archimedes figured one out), but they weren't easy to perform without computing devices.

The JAM · Post by **The JAM** » Sat Apr 30, 2005 5:12 pm

[...unWARP!!!]

Good evening.

I think a mathematician (can't remember the name) estimated pi to be somewhere between 3 1/7 and 3 10/71.

And a state congress somewhere decided that it was equal to 4...

Artemel · Post by **Artemel** » Sat Apr 30, 2005 6:03 pm

Sorry Sharuuk, he is closer. You used 22/7; which is a fractional equivalent used by lower level math classes. His is more accurate, as 22/7 is NOT all that accurate past 3 significant digits.

EDIT: arg, sorry, I missed a whole page of information saying the same. Sorry that I missed it.

Note to self: When its late and you have come home both tired and a weeeeeeee bit inebriated, do NOT post.

Sharuuk · Post by **Sharuuk** » Sat Apr 30, 2005 7:16 pm

SolidusRaccoon wrote:
Sharuuk wrote:
SolidusRaccoon wrote:Heh, me version is right.
Yeah??? Well so's meen....er.. MINE! pbbbbt

Shaaruuk
MA!!!, git mah gun.

ROTF......

Sharuuk · Post by **Sharuuk** » Sat Apr 30, 2005 7:24 pm

Artemel wrote:Sorry Sharuuk, he is closer. You used 22/7; which is a fractional equivalent used by lower level math classes. His is more accurate, as 22/7 is NOT all that accurate past 3 significant digits.

Maybe so for much more crucial measurments and calcs.....but, as the bard once said: "Hey....works for me!"

It's all I've ever needed for anything I did that required 'pi' as a factor in the calcs.

Shaaruuk

SolidusRaccoon · Post by **SolidusRaccoon** » Mon May 02, 2005 8:00 am

3.14159 is all I will ever need.

Wayfarer · Post by **Wayfarer** » Mon May 02, 2005 9:48 am

Awwww, but it's so much more fun to find the places where they have pi out to, say 10,000 (http://www.csgnetwork.com/piinfo.html)to a trillion (http://www.guinnessworldrecords.com/con ... rdid=47055) digits or so...

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