Author Topic: The Math Lovers Club v. 3.1416 (Read 35659 times)

rumborak · « **Reply #70 on:** August 25, 2009, 02:12:54 PM »

Quote from: XJDenton on August 25, 2009, 02:01:59 PM

Pi = 3 ish.

https://www.straightdope.com/columns/read/805/did-a-state-legislature-once-pass-a-law-saying-pi-equals-3

rumborak

kári · « **Reply #71 on:** August 25, 2009, 02:17:00 PM »

Kind of reminded me of this: https://www.netreach.net/~rjones/no_dhmo.html

Dimitrius · « **Reply #72 on:** September 21, 2009, 03:09:36 PM »

Math lovers, I need some help.

I need you guys to help me check if this formula for surface area (note, I am literally translating from Spanish to English so I'm not sure if it's the same name, here's the formula: 2(pi)S R(x) [1 + F'(x)²]^1/2 dx)

So it turns on x=y³ in the interval [0, 3]

I don't need the end result, I just want to check how the formula turns out.

Sir GuitarCozmo · « **Reply #73 on:** September 21, 2009, 05:43:19 PM »

Not checking to see if this was already posted, so I'm just going to offer some obligatory math sarcasm:

XianL · « **Reply #74 on:** September 21, 2009, 05:45:36 PM »

jasc15 · « **Reply #75 on:** September 21, 2009, 05:50:36 PM »

There are 10 types of people; those who understand binary, and those who don't.

Jamesman42 · « **Reply #76 on:** September 21, 2009, 09:14:44 PM »

Quote from: Dimitrius on September 21, 2009, 03:09:36 PM

Math lovers, I need some help.

I need you guys to help me check if this formula for surface area (note, I am literally translating from Spanish to English so I'm not sure if it's the same name, here's the formula: 2(pi)S R(x) [1 + F'(x)²]^1/2 dx)

So it turns on x=y³ in the interval [0, 3]

I don't need the end result, I just want to check how the formula turns out.

Is that Volume using Integrals?

Dimitrius · « **Reply #77 on:** September 21, 2009, 09:19:51 PM »

Quote from: Jamesmiain on September 21, 2009, 09:14:44 PM

Quote from: Dimitrius on September 21, 2009, 03:09:36 PM
Math lovers, I need some help.

I need you guys to help me check if this formula for surface area (note, I am literally translating from Spanish to English so I'm not sure if it's the same name, here's the formula: 2(pi)S R(x) [1 + F'(x)²]^1/2 dx)

So it turns on x=y³ in the interval [0, 3]

I don't need the end result, I just want to check how the formula turns out.

Is that Volume using Integrals?

No. Though it looks very much like that. I'm trying to find how do they call it on English.

Just derive the x and put in the F'(x)², that's my main doubt.

Jamesman42 · « **Reply #78 on:** September 21, 2009, 09:40:10 PM »

Arc length?

Fiery Winds · « **Reply #79 on:** June 17, 2011, 11:22:27 PM »

MASSIVE BUMP

Just posted this as my FB status:

Just used Trigonometry to find the optimum angle for a 3 monitor setup and to determine the total desk width required from the base of the left monitor to the base of the right monitor (overhang by the screen ok). I think I just found the perfect math activity if I ever teach a Trigonometry class!

kári · « **Reply #80 on:** June 18, 2011, 12:25:50 AM »

Cool.

juice · « **Reply #81 on:** June 18, 2011, 02:22:19 AM »

I'd "Like" the status.

mizzl · « **Reply #82 on:** June 18, 2011, 03:15:19 AM »

Fuck yeah complex numbers!

Portrucci · « **Reply #83 on:** June 18, 2011, 03:29:12 AM »

lets discuss this awesome formula

it's amazing how those unrelated but fundamental constants & 'i' all work together like that.

kári · « **Reply #84 on:** June 18, 2011, 04:30:40 AM »

It just means geometrically if you rotate something in the complex plane around the origin half a turn, you get -1*(what you rotated).

jag66 · « **Reply #85 on:** June 18, 2011, 04:35:16 AM »

Quote from: Portrucci on June 18, 2011, 03:29:12 AM

lets discuss this awesome formula

it's amazing how those unrelated but fundamental constants & 'i' all work together like that.

That was my favourite equation at school. Mathematical elegance at its best!

kári · « **Reply #86 on:** June 18, 2011, 04:38:01 AM »

I don't know... writing it as e^(i*Pi) + 1 = 0 kind of makes it meaningless.

jag66 · « **Reply #87 on:** June 18, 2011, 06:17:30 AM »

Quote from: kári on June 18, 2011, 04:38:01 AM

I don't know... writing it as e^(i*Pi) + 1 = 0 kind of makes it meaningless.

e^(i*Pi) = -1 doesn't look as good

kári · « **Reply #88 on:** June 18, 2011, 06:46:58 AM »

Well yes it's like a "trick" to make it look better. My point was just that I could also write 1 - 1 + i^(e*Pi)*Phi*0 = 0 which contains even another "fundamental constant" but the connection is meaningless. Of course Euler's equation is much more beautiful but it's something that happens to be correct. Not some kind of proof or ultimate equation. which some people praise it as.

Orbert · « **Reply #89 on:** June 18, 2011, 09:06:43 AM »

Quote from: Portrucci on June 18, 2011, 03:29:12 AM

lets discuss this awesome formula

it's amazing how those unrelated but fundamental constants & 'i' all work together like that.

I've always loved that equation, or identity, or whatever you call it. My friends and I used to have this thing (which I've actually forgotten about until now) where we'd greet each other with statements which make no sense on the surface, or make no sense to someone not extremely well-versed on the subject. Just for shits and giggles. I remember using this one because it's so fun to say out loud.

"Hey man, what's up? E to the eye pie is negative one."
"What? Oh, not much. The crux of the biscuit is the apostrophe."

It didn't last long, and I think I was the only one really into it, but it was amusing for a while.

Aramatheis · « **Reply #90 on:** June 18, 2011, 03:00:09 PM »

Well this is my first time seeing this thread, and I think I'd like to join in on all the fun

I'm not a huge math nerd, but I don't hate math either.
I've taken a few first level calculus and algebra courses so far in university (Differential Calculus, Integral Calculus, Linear Algebra, Stats for the Sciences, and am currently taking Vector Calculus).

I don't have an innate ability to do or understand math, so I still have to work at it, but I still manage to get by with a 75% or so in my classes.
I find that math is much more enjoyable when you understand what you're doing, so I'm quite happy and quite lucky to have had the same calculus teacher for my differential, integral and vector calculus classes, because the man is phenomenal at explaining theorems and ideas.

He's a wonderful teacher, but he does give difficult tests..
All in all, having such a good teacher has really allowed me to enjoy and understand math a lot more than I ever did before, and I have a much better appreciation for it now.

/rant

Jamesman42 · « **Reply #91 on:** June 18, 2011, 06:03:37 PM »

Quote from: kári on June 18, 2011, 06:46:58 AM

Well yes it's like a "trick" to make it look better. My point was just that I could also write 1 - 1 + i^(e*Pi)*Phi*0 = 0 which contains even another "fundamental constant" but the connection is meaningless. Of course Euler's equation is much more beautiful but it's something that happens to be correct. Not some kind of proof or ultimate equation. which some people praise it as.

Many mathematicians consider it elegant and simply beautiful because it contains the 5 most commonly used (or important or whatever) numbers in math. It's not anything crazily profound beyond its own statement of using those 5 numbers, but having those numbers in true equation like that is really something else for its beauty.

zxlkho · « **Reply #92 on:** June 18, 2011, 06:26:02 PM »

Math is the greatest tool that we have as humans. Anyone that hates it is either sucks at it or is just too dumb.

Yes I'm being serious.

Jamesman42 · « **Reply #93 on:** June 18, 2011, 06:29:23 PM »

Ryan

o/

zxlkho · « **Reply #94 on:** June 18, 2011, 06:38:50 PM »

Jamesman42 · « **Reply #95 on:** June 18, 2011, 06:39:42 PM »

lonestar · « **Reply #96 on:** June 18, 2011, 07:05:45 PM »

Quote from: zxlkho on June 18, 2011, 06:26:02 PM

Math is the greatest tool that we have as humans. Anyone that hates it sucks at it.

*raises hand*

ricky · « **Reply #97 on:** June 18, 2011, 07:48:42 PM »

i'm pretty sure jimbo owns this thread.

ich bin besser · « **Reply #98 on:** October 13, 2011, 03:11:04 PM »

I'm lazy. That's my only excuse.
Anyone care to solve this for me?

5 x A : 2 + B - C = 2
D x 9 : E + 8 - F = 15
6 x G : H + I - 2 = 57
9 x J : K + L - 5 = 22
9 x M : 3 + N - 1 = 30

Danke!

Phoenix87x · « **Reply #99 on:** October 13, 2011, 03:25:19 PM »

I used to love Math and I really still want to, but Calculus III is really having its way with me right now.

73109 · « **Reply #100 on:** October 13, 2011, 03:30:02 PM »

I'm in Calc 1/2 now. Today, we took the derivative of a derivative of a derivative of a derivative. Fun shit.

Dimitrius · « **Reply #101 on:** October 13, 2011, 03:56:06 PM »

Derivatives are so easy. *shrugs*

Jamesman42 · « **Reply #102 on:** October 13, 2011, 04:12:10 PM »

Quote from: ich bin besser on October 13, 2011, 03:11:04 PM

I'm lazy. That's my only excuse.
Anyone care to solve this for me?

5 x A : 2 + B - C = 2
D x 9 : E + 8 - F = 15
6 x G : H + I - 2 = 57
9 x J : K + L - 5 = 22
9 x M : 3 + N - 1 = 30

Danke!

Is this a system of equations? Not sure how to read this exactly.

Quote from: Phoenix87x on October 13, 2011, 03:25:19 PM

I used to love Math and I really still want to, but Calculus III is really having its way with me right now.

Hang in there. You'll be fine and you'll love math more afterward.

Jamesman42 · « **Reply #103 on:** October 13, 2011, 04:13:10 PM »

Quote from: 73109 on October 13, 2011, 03:30:02 PM

I'm in Calc 1/2 now. Today, we took the derivative of a derivative of a derivative of a derivative. Fun shit.

The 1,000th derivative of e^(3x) is (3^1000)e^(3x). Suck it

73109 · « **Reply #104 on:** October 13, 2011, 04:29:08 PM »

Is that the chain rule? I just learned that today, so excuse me if it isn't.

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Author Topic: The Math Lovers Club v. 3.1416 (Read 35659 times)