Old 11-29-2008, 08:51 AM   #1
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Well we have threads for foreign languages, why can't we have one for mathematics? This is pretty much a thread about anything to do with maths.

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By the way, sorry I've been offline for so long.
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Old 11-29-2008, 02:43 PM   #2
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Quote:
Originally Posted by Sam's Crow
Well we have threads for foreign languages, why can't we have one for mathematics? This is pretty much a thread about anything to do with maths.

Ready... Set... Go!

By the way, sorry I've been offline for so long.
That's alright. The first Round Robin was finished, so I hope you can contribute to the second one.

As for mathematics, I can't really think of anything. The only smart mathematical theory I know is the Quatratic Formula:

-B +/- the square root of B(squared) - 4AC divided by 2A.
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Old 11-29-2008, 03:51 PM   #3
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It doesn't have to be a "smart Mathematical theory, it's just a discussion about anything to do do with Mathematics.
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Old 11-29-2008, 04:12 PM   #4
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cool I'm in. I'm rusty but I used to be quite good... back when I was trying to become an engineer
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Old 11-30-2008, 01:33 AM   #5
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Oh yeah, I'm part of this "Maths Challenge" thing in school. I might get put on the "Maths Team" and compete against other schools in Mathematics. Cool huh?
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Old 11-30-2008, 01:47 AM   #6
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Quote:
Originally Posted by Sam's Crow
Oh yeah, I'm part of this "Maths Challenge" thing in school. I might get put on the "Maths Team" and compete against other schools in Mathematics. Cool huh?
Very cool.
I did a competition for my final assesment in math... well I only had to do the first round and after passing it and writing my paper about it, I quit the competition for time reasons. So I never found out how far I would have gotten.

So what shall we talk about?

How do people feel about the square root of -1 not being defined?
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Old 11-30-2008, 02:20 AM   #7
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When I took algebra, we always made the square root of -1 "i". In that situation, the square root of a number such as -16 would equal 4(i), or something to that effect. Since there's no way to solve for a negative square root, I'd say it would be pretty hard to define.

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Old 11-30-2008, 04:03 AM   #8
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Sorry,
it's the oposite.

i square is -1
but the square root of -1 will remain undefined.

Which is a trap I stepped into with much gusto over the years,
The things you can prove with that mistake, it's hillarious.
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Old 11-30-2008, 12:10 PM   #9
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Luckily, I never had to try and prove anything with that mistake, or else I would probably have learned that lesson like you did.
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Old 12-07-2008, 04:29 PM   #10
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I remember the rule of -1. I flunked math both in High School and College...along with half the class.
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Old 12-07-2008, 06:58 PM   #11
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Quote:
Originally Posted by Errowyn
I remember the rule of -1. I flunked math both in High School and College...along with half the class.
I had really good, motivational teachers most of the time, that makes all the difference.
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Old 12-07-2008, 07:28 PM   #12
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This is how good I am at Math.
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Old 12-07-2008, 08:33 PM   #13
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That is hilarious. To be honest, I would have no idea how to solve that. Nice save; you did answer the question correctly. Was it that on a test?
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Old 12-07-2008, 09:59 PM   #14
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Actually, I saw the image on a website, remembered it, and posted the link here. I wish I had done that in my Math class, though, just to see what the reaction would be.
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Old 12-08-2008, 01:07 AM   #15
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it's cool! *L*

and technically correct.
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Old 12-08-2008, 08:00 AM   #16
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How sad I know the answer.

x=5cm

Formula is
x(squared) = a(squared) + b(squared)
x(squared) = (4x4) + (3x3)
x(squared) = 16 + 9
x(squared) = 25
x = square root of 25
x= 5
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Old 12-08-2008, 09:40 AM   #17
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i may even remember the the formula for non-right angles if I concentrate, how sad is that? *L*

something like:
c= a - 2ab COS(α) + b

probably wrong though, so someone please correct me .
In any case the Cos of 90 degrees is zero, that's
why it simplifies to c = a + b
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Old 12-08-2008, 12:34 PM   #18
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(Smiles and nods)
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Old 12-08-2008, 06:46 PM   #19
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did I get it right?
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Old 12-08-2008, 08:12 PM   #20
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I don't know. I'm smiling and and nodding because I don't know what your doing.
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Old 12-08-2008, 09:07 PM   #21
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ah Ok.
*smiles and nods too, pretending she knows what she's doing*
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Old 12-11-2008, 04:06 PM   #22
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I have this friend who is a Maths GENIUS. And I don't just mean she's really clever/ good at Maths, she's an actual genius (though of course nowhere near Sam's level ).

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Old 12-13-2008, 11:59 AM   #23
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That's excellent.
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Old 12-13-2008, 02:39 PM   #24
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xkcd.com has loads of these.
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Old 12-15-2008, 08:26 PM   #25
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Sadly, I don't even know what the subject of physics is...

But I must say, math must be more important than school children think when they moan "why do I have to take this? I'll never use algebra."
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