How old are you?

Post by **Kizyr** » Thu Nov 09, 2006 10:52 pm

Pisces wrote:25.

Dude....

You're halfway to fifty! KF

Agawa · Post by **Agawa** » Thu Nov 09, 2006 11:38 pm

I'm 17, same as Lunartic. This is my graduating year...hopefully!

PrettyGirlJean · Post by **PrettyGirlJean** » Fri Nov 10, 2006 1:39 am

I'm halfway to 50 too... I turned 25 in June :p

phyco126 · Post by **phyco126** » Fri Nov 10, 2006 3:44 am

I'm now 22

If I was any good in math, I'd give you some out of wack fraction, but I'm not, so, uh, use your imaginations or something >:D

Post by **Sonic#** » Fri Nov 10, 2006 1:28 pm

How about this, phyco... you're about 7 times an approximation for pi. (22/7)

And I may as well add... I'm 21 now. I've had a few alcoholic drinks in restaurants, but so far I haven't been particularly impressed. The best was some Italian Ice... but that just made me cringe.

Post by **Kizyr** » Fri Nov 10, 2006 3:11 pm

Sonic# wrote:How about this, phyco... you're about 7 times an approximation for pi. (22/7)

Bleh. I never liked that approximation for Pi. Folks don't have to remember it all the way out to 3.14159265358979 or anything, just 3.14 will do. But 22/7 is an abomination.

My favorite is still the unit circle integral formula:
int(from -1 to 1) of [(1-x^2)^-0.5]dx

I'm 23, by the way, same as I was in my last post on this thread. KF

YoshiMars · Post by **YoshiMars** » Sat Nov 11, 2006 2:50 pm

Kizyr wrote:int(from -1 to 1) of [(1-x^2)^-0.5]dx

Ack! Don't bring calculus into this mess! Especially integrals. That's all I've been doing in class as of late (or heck all of calc 2 is integrals really... brain hurtage).

I'sa still be 22, 23 is comming mid-december. Yay me.

Post by **Sonic#** » Sun Nov 12, 2006 12:48 am

Well, I agree, 22/7 isn't clean. But the Greeks used it to avoid the dirty little secret of numbers inexpressible by ratios, so... it has its place.

Ah, I do like the integral you give. For non-calculation, there's e^(i*pi) + 1 = 0, Euler's toy. There's also the power series expansions that use it, though they're far too unwieldy (and the integral expresses that far more concisely).

Agawa · Post by **Agawa** » Sun Nov 12, 2006 1:04 am

Sonic# wrote:
And I may as well add... I'm 21 now. I've had a few alcoholic drinks in restaurants, but so far I haven't been particularly impressed. The best was some Italian Ice... but that just made me cringe.

Wowza, twenty-one. I always forget how high the drinking age is in the U.S. It doesn't make much sense to me, but I guess I'm used to Canada's 18/19. Still...21 seems like a high age.

Werefrog · Post by **Werefrog** » Sun Nov 12, 2006 1:29 am

Sonic# wrote:Well, I agree, 22/7 isn't clean. But the Greeks used it to avoid the dirty little secret of numbers inexpressible by ratios, so... it has its place.

Ah, I do like the integral you give. For non-calculation, there's e^(i*pi) + 1 = 0, Euler's toy. There's also the power series expansions that use it, though they're far too unwieldy (and the integral expresses that far more concisely).

If the Bible says pi is 3, that's good enough for me.

Mog Dragonheart · Post by **Mog Dragonheart** » Sun Nov 12, 2006 1:33 am

I'm 20, I think I've been around here atleast with the ACO guys since 1996-7? I dunno. I don't remember, but damn that was a long time ago.

Dying_Soul93 · Post by **Dying_Soul93** » Wed Nov 15, 2006 12:22 am

I'm Thirteen

Post by **Kizyr** » Wed Nov 15, 2006 12:41 am

Sonic# wrote:Ah, I do like the integral you give. For non-calculation, there's e^(i*pi) + 1 = 0, Euler's toy. There's also the power series expansions that use it, though they're far too unwieldy (and the integral expresses that far more concisely).

Bah! I still don't get that bit.

This articulates my thoughts better than I could:
http://www.xkcd.com/c179.html
(warning: mildly foul language). KF

Post by **GhaleonOne** » Wed Nov 15, 2006 12:53 am

I'm 20, I think I've been around here atleast with the ACO guys since 1996-7? I dunno. I don't remember, but damn that was a long time ago.

You're 20 now Mog? Geeze, I still think of you as 13 jumping off the couch pretending to be Hulk Hogan or something. It's just weird.

Post by **Sonic#** » Wed Nov 15, 2006 12:59 am

I'm glad we have teh blagotubes.

No, it's a fairly simple proof... though you have to accept the existence of natural numbers and the power series (infinite sum) for the exponential (and sine and cosine).

(infinite sum from k=0 onward) x^k/k! = e^x

e^(ix) =
(infinite sum from k=0 onward) (-1)^k * x^(2k) / (2k)! +

(infinite sum from k=0 onward) i*(-1)^k * x^(2k+1) / (2k+1)! =

cos x + isin x. For x=pi,
e^(i*pi) = -1.

... and if you choose to not trust the power series given... you can find proofs for them yourself.

Post by **Kizyr** » Wed Nov 15, 2006 3:52 am

Sonic# wrote:I'm glad we have teh blagotubes.

No, it's a fairly simple proof... though you have to accept the existence of natural numbers and the power series (infinite sum) for the exponential (and sine and cosine).

Ok, that's it. I gotta take this to another thread... KF

Dark · Post by **Dark** » Mon Nov 20, 2006 11:14 am

I am 16.

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