Survey posted 2002-03-16 13:51 by Henrik.

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Yes, I celebrated Pi day, my mom's birthday is on that day =)

Pi Day is my favorite holiday of the year.

Me too!

Pi day is not a holiday: it has no reference to a holy or pagan celebration (which is where most holidays come from). I like to call Pi day more of a "mathiday".

Who keeps downloading jezzball so it's always on the top of all the top lists?

I think you did the jezzball thing. anyway, is there any point at all to this pi day?

No

i voted that it sucks. :)

lol

me too, pi day sucks

Nah-uhh!

Uh-uhh!!

Nah-uhh!

Pi day is the BEST!!!! HAHAHAHAHA!

The basic point to Pi Day is to celebrate the number pi and everything related to it.

Man this conversation's just going around in circles.

... just like a circumference!

And guess what you get if you divide a circumference by the diameter?




PI!!!!!!!

What the hell is related to Pi...?

I think that might be a circle?...
Yep that's definitely a circle and all things circular - or spherical.

Yeah what ever... thanks for remembering me....

first off, pi rules!
hosted.calc.org/~gforce/stuff/pi.txt

Second Off, Ever wonder how it was derived?
in a ti-89, or 92p, type this:
Define pi(n)=4*E((-1)^n/(2*n+1),n,0,n)
where the E is the summation notation function defined in the catalog (a fancy looking thing)

Heck, i even implemented that pi calculating function in TIGCC... by taking advantage of the multitasking features of teh calculator, i can calculate pi with a calculator, and still be able to use the darn thing :P

You may want to change your calc to approx mode before doing this--it'll take too long otherwise.

Um, no... approximate mode is not necessary... if you use the above formula, put in infinity, and see what happens in exact mode....

The program i have on my calculator isn't limited by the ti-os math functions. It calculates the individual digits.... it dosen't care about decimal places etc.... in theory this program could do any number of decimal places, but it is limited by the amount of memory on the calculator...

I put infinity in for that equation on my TI-89 and got the error: "Arguement must be a variable name"

Are you putting infinity in for n in the function definition? You need to do "pi(infinity)" after you define it as it is above.

where do you define it? on the homescreen?

What E? the first 'E' or second 'e^('?

that 'E' you are referring to is called a capital sigma. a capital sigma is a greek letter used to represent a looping of additions.
just so you know, the sigma looks like this:
__
\
/_

well...kinda (im not too good at ascii art)

I like ASCII art!

|||||||||||
/...........\
|...*.....*...|
|......&......|
|...\______/..|
\___________/

On windows calculator type

.5

then hit the n! button
then hit the x^2 button
then type * 4 =

and you'll get... PI!