Author Topic: The Math Lovers Club v. 3.1416  (Read 35468 times)

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Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #35 on: July 16, 2009, 03:46:44 PM »
.999... = 1 because 1/9 = .1111.... and 1/9*9 = 1 and .1111.... and .1111....*9 = .9999, therefore making .999...=1.

I love that rule.

Offline axeman90210

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Re: The Math Lovers Club v. 3.1416
« Reply #36 on: July 16, 2009, 03:49:58 PM »
I was also a fan of

.999... = X
9.999... = 10X
-.999... = -X
9 = 9X
X = 1
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Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #37 on: July 16, 2009, 03:51:11 PM »
I like that way. I was just going by memory.

I forgot that you love math, brother. Yay. :laugh:

Offline kári

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Re: The Math Lovers Club v. 3.1416
« Reply #38 on: July 16, 2009, 04:05:46 PM »
I like proving that the difference between 0.99.. and 1 is 0.

You and me go parallel, together and apart

Offline Orbert

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Re: The Math Lovers Club v. 3.1416
« Reply #39 on: July 16, 2009, 04:57:08 PM »
1 = sqrt(1) = sqrt((-1)(-1)) = sqrt((-1)2) = -1

amiright? ;D

No, it falls apart at the last Equals sign.

sqrt((-1)2) = -1 seems intuitive at first, but it's second degree, and you simplify under the radical first, so all it's really saying is that -1 is one of the square roots of 1.  The other of course is 1, and there's no rule that says the roots must be equal.
XianL even used the fact that (-1)˛=1 in the second step.

True, but that was a legitimate substitution.  It was the reduction at the end that was illegal.

Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #40 on: July 16, 2009, 05:12:11 PM »
Yep, square root of 1 is positive OR negative 1.

Offline sneakyblueberry

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Re: The Math Lovers Club v. 3.1416
« Reply #41 on: July 16, 2009, 07:48:57 PM »
Math Rock?

Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #42 on: July 16, 2009, 07:49:30 PM »
Mute Math (awesome band)

Offline Zeltar

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Re: The Math Lovers Club v. 3.1416
« Reply #43 on: July 16, 2009, 07:54:22 PM »
I've failed math every year I've had it and all my teachers have been pretty bad, on top of it. They were all douchebags and couldn't teach for shit, I can't think of one math teacher that I didn't get into at least 5 heated arguments over the course of the year.

I think if I had a legit teacher I can do well but at this point, I hate the subject more than anything.

Offline emindead

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Re: The Math Lovers Club v. 3.1416
« Reply #44 on: July 16, 2009, 07:55:09 PM »
It's "maths".

Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #45 on: July 16, 2009, 08:04:35 PM »
It's culture you arrogant jerk. :-*

Offline sneakyblueberry

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Re: The Math Lovers Club v. 3.1416
« Reply #46 on: July 16, 2009, 08:04:55 PM »

Offline ddtonfire

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Re: The Math Lovers Club v. 3.1416
« Reply #47 on: July 16, 2009, 08:22:53 PM »
e + 1 = 0

I remember when i learned why this is true.

I :heart Euler's identity.


Offline DarkLord_Lalinc

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Re: The Math Lovers Club v. 3.1416
« Reply #48 on: August 23, 2009, 04:39:33 PM »
Bump. Just because the Limit when x-->infinity of (x + 1/x)^x equals e.
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Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #49 on: August 23, 2009, 04:46:40 PM »
Good timing, I start my semester tomorrow, and every class has to do with math (some are math, some are math-related like tutoring and math technology).

I can't wait!

Offline Dimitrius

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Re: The Math Lovers Club v. 3.1416
« Reply #50 on: August 23, 2009, 04:47:50 PM »
You know, I have a love/hate relationship with math.

Right now I'm loving how easy it is to derive and integrate hyperbolic trigonometric functions!
Joe and I in the same squad is basically the virtual equivalent of us plowing a rape van through an elementary school playground at recess.

Offline DarkLord_Lalinc

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Re: The Math Lovers Club v. 3.1416
« Reply #51 on: August 23, 2009, 04:48:56 PM »
I have an Algebraic Models class, which has to do with all the math related for computer design (proper integrals, Geometry, conics, Differential Equations, etc.) and Calculus once again. It should be easy and great  :D
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Offline DarkLord_Lalinc

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Re: The Math Lovers Club v. 3.1416
« Reply #52 on: August 23, 2009, 04:50:07 PM »
You know, I have a love/hate relationship with math.

Right now I'm loving how easy it is to derive and integrate hyperbolic trigonometric functions!
'Tis indeed easy, that's good and friendly calculus. Vectors and polarities are not so friendly. CURSE YOU F(x,y,z), CURSE YOU
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Offline Dimitrius

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Re: The Math Lovers Club v. 3.1416
« Reply #53 on: August 23, 2009, 04:52:08 PM »
Yeah, we just started on area between two curves.

My uni divides into 3, 3 months "trimesters" on a normal school year. So calculus is divided into 4 different classes, so I'm still on pretty easy things.
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Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #54 on: August 23, 2009, 04:54:01 PM »
I have Calculus 3, which is the last Calc class they offer at my college. I don't even know if Calc goes past that.

I also have Applied Linear Algebra. We'll see how that goes down (no idea what it's about apart from the name).

You know, I have a love/hate relationship with math.

Right now I'm loving how easy it is to derive and integrate hyperbolic trigonometric functions!

Is that the csc h x thingy? We barely touched upon those, and that annoyed me because my professor made us memorize who to derive and integrate those things as soon as we entered for the semester. It seemed kind of rough probably because of that. :lol

Edit: Oh man, I need to review vectors and polar coordinates. I'll need it for Calc 3. :(

Offline Dimitrius

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Re: The Math Lovers Club v. 3.1416
« Reply #55 on: August 23, 2009, 04:54:56 PM »
Yeah. Senh, cosh, tanh, coth, csch, sech.
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Offline DarkLord_Lalinc

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Re: The Math Lovers Club v. 3.1416
« Reply #56 on: August 23, 2009, 05:12:04 PM »
Integrals by Trigonometric Substitution is where it's all at.
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Offline Tick

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Re: The Math Lovers Club v. 3.1416
« Reply #57 on: August 23, 2009, 06:49:21 PM »
"Nothing from nothing leaves nothing." - Billy Preston
Yup. Tick is dead on.  She's not your type.  Move on.   Tick is Obi Wan Kenobi


Offline rumborak

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Re: The Math Lovers Club v. 3.1416
« Reply #58 on: August 23, 2009, 06:55:09 PM »
"I liked when Myung looked like a women's figure skating champion."

Offline DarkLord_Lalinc

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Offline glaurung

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Re: The Math Lovers Club v. 3.1416
« Reply #60 on: August 23, 2009, 08:11:15 PM »
Using math to figure out a puzzle can be fun. Memorizing forumulas and how to plug numbers into the formula to solve a problem I will most likely never encounter in day to day life is not fun in the slightest.
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Offline 73109

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Re: The Math Lovers Club v. 3.1416
« Reply #61 on: August 23, 2009, 08:28:48 PM »
I love math except for one thing.

Those stupid imaginary numbers.

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Re: The Math Lovers Club v. 3.1416
« Reply #62 on: August 23, 2009, 10:47:24 PM »
I love math except for one thing.

Those stupid imaginary numbers.

Why? It's basically just substitution.

I get to start vector calculus in a month when school starts again.  :metal :metal
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Offline blackngold29

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Re: The Math Lovers Club v. 3.1416
« Reply #63 on: August 23, 2009, 11:00:43 PM »
Don't have math this semester! Sometimes it's fun, but I had a horrible teacher last semester.


Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #64 on: August 24, 2009, 06:26:50 AM »
Still the best of them all:



https://en.wikipedia.org/wiki/1_%E2%88%92_2_%2B_3_%E2%88%92_4_%2B_%C2%B7_%C2%B7_%C2%B7

rumborak


Ahhhh, series. I had trouble with these because my teacher taught us 7 sections on it in 3 hours. :|

Offline jasc15

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Re: The Math Lovers Club v. 3.1416
« Reply #65 on: August 24, 2009, 12:50:04 PM »
Still the best of them all:



https://en.wikipedia.org/wiki/1_%E2%88%92_2_%2B_3_%E2%88%92_4_%2B_%C2%B7_%C2%B7_%C2%B7

rumborak

I'm sure the proof is well beyond my understanding of infinite series, but this is specifically described as a divergent series.  So what gives?

Offline Orbert

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Re: The Math Lovers Club v. 3.1416
« Reply #66 on: August 24, 2009, 02:33:42 PM »
You know, I have a love/hate relationship with math.

Right now I'm loving how easy it is to derive and integrate hyperbolic trigonometric functions!

I was fine with derivatives and differentials.  The rules were pretty simple, and once you covered each of the variations, you were set.  It was actually fun (in a sick way).  Integrals were mostly just reversing things, and covering the rules for the constants.  (Yes, I know that's a massive oversimplification.)

Then we got to integration by parts.  Then nested integrals, and other "next level" stuff, and I started losing it.  I managed to limp through my last term of calculus with a 2.5, and got into advanced calculus. 

The textbook was "Advanced Calculus - An Introduction to Analysis".  I just went Holy Fucking Shit! The advanced course in something that was already blowing my mind is only the intro to something else!  I passed advanced calculus (the second time) and then switched majors.  I'd reached the limit (ha!) of what my mind could handle.

Offline Jamesman42

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Re: The Math Lovers Club v. 3.1416
« Reply #67 on: August 24, 2009, 10:54:27 PM »
Yeah Orbert, that was what I learned in Calc II, and it made my semester so rough (already having 18 credits was enough).

Offline TimmyHiggy

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Re: The Math Lovers Club v. 3.1416
« Reply #68 on: August 25, 2009, 01:58:14 PM »
i like maths, i would say i love it though.
Im not sure whether my favourite area is calculus or trigonometry...
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Offline XJDenton

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Re: The Math Lovers Club v. 3.1416
« Reply #69 on: August 25, 2009, 02:01:59 PM »
Pi = 3 ish.
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