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Sam's Crow 11-29-2008 08:51 AM

Mathematics
 
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.:cry

ohboy 11-29-2008 02:43 PM

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.:cry

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.

Sam's Crow 11-29-2008 03:51 PM

It doesn't have to be a "smart Mathematical theory, it's just a discussion about anything to do do with Mathematics.

jassian 11-29-2008 04:12 PM

cool I'm in. I'm rusty but I used to be quite good... back when I was trying to become an engineer ;)

Sam's Crow 11-30-2008 01:33 AM

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?

jassian 11-30-2008 01:47 AM

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. :hurray:
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?

ohboy 11-30-2008 02:20 AM

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.

8o

jassian 11-30-2008 04:03 AM

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.

ohboy 11-30-2008 12:10 PM

Luckily, I never had to try and prove anything with that mistake, or else I would probably have learned that lesson like you did. :|

Errowyn 12-07-2008 04:29 PM

I remember the rule of -1. I flunked math both in High School and College...along with half the class.

jassian 12-07-2008 06:58 PM

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.:)

MO 12-07-2008 07:28 PM

This is how good I am at Math.

ohboy 12-07-2008 08:33 PM

:lol:lol:lol

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?

MO 12-07-2008 09:59 PM

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.

jassian 12-08-2008 01:07 AM

it's cool! *L*

and technically correct.

ris768 12-08-2008 08:00 AM

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

jassian 12-08-2008 09:40 AM

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

ohboy 12-08-2008 12:34 PM

(Smiles and nods)

jassian 12-08-2008 06:46 PM

did I get it right?

ohboy 12-08-2008 08:12 PM

I don't know. I'm smiling and and nodding because I don't know what your doing.

jassian 12-08-2008 09:07 PM

ah :lol Ok.
*smiles and nods too, pretending she knows what she's doing*

Ziggy 12-11-2008 04:06 PM

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 :b).

http://imgs.xkcd.com/comics/purity.png

Sam's Crow 12-13-2008 11:59 AM

That's excellent.

Ziggy 12-13-2008 02:39 PM

xkcd.com has loads of these.

ohboy 12-15-2008 08:26 PM

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."

jassian 12-15-2008 09:25 PM

Quote:

Originally Posted by ohboy
Sadly, I don't even know what the subject of physics is...

What do you mean?

maths is just such an underlying foundation of everything, that sometimes it's really hard to see its application. Even if it's right in front of you. *L* it just describes the way life works. :)

Do you know this one?

How does a Mathematician catch a lion?

He builds a cage around himself and defines the inside as the outside. Done.

ohboy 12-17-2008 02:07 AM

Sorry if I was unclear. I mean that I don't understand what Physics focuses on. I know that the focus of biology is the study of living organisms, psychology is the study of the mind, but I don't know what physics studies.

Lightning McQueenie 12-17-2008 02:37 AM

As a mathematician and mathematics teacher, I think I'll do well in this group :D.

And when in doubt, check wikipedia...

http://en.wikipedia.org/wiki/Physics

jassian 12-17-2008 02:40 AM

Pretty much the underlying mechanics of everything.

Why things stay as they are why thing interact as they do, fields (gravity... although some say that's particles, magnetic fields, electric fields) Electricity, Thermal behavior, sounds, light (and other electromagnetic waves), nuclear phisics... that's decay rates and types of radiation and so on, quantum physics, that's how the smallest particles hold together and interact. Up to astrophyscis.
it's not a proper formal list, here's one:
http://physics.about.com/od/physics1...ldsPhysics.htm

it's pretty much describing the behavior and underlying forces of ... yup... everything. :) And that in turn is based on maths.

Was that your question?

ohboy 12-17-2008 06:55 PM

It was my question. Thank you for the quick and complete response.

jassian 12-17-2008 08:09 PM

Quote:

Originally Posted by Lightning McQueenie
As a mathematician and mathematics teacher, I think I'll do well in this group :D.

And when in doubt, check wikipedia...

http://en.wikipedia.org/wiki/Physics

Ah sorry mate, missed your post.
So did I get my formula right a few posts ago? :)
(you shouldn't have told me, now I may keep pestering you with questions 8) :D )

Ziggy 12-18-2008 04:44 PM

I'm doing nuclear physics at school at the moment! I'm thinking of doing Physics for A-Level actually...

jassian 12-19-2008 12:59 AM

Quote:

Originally Posted by Ziggy
I'm doing nuclear physics at school at the moment! I'm thinking of doing Physics for A-Level actually...

I recommend it, if you got the hang of it. The nuclear physics exam for my german A-level counterpart was the most fun part part of my entire final exams, btw :)

Ziggy 12-19-2008 03:17 PM

Awesome. I've been thinking about it more and mre, and I think I definitely am going to.

jassian 12-21-2008 10:23 PM

Quote:

Originally Posted by Ziggy (Post 47757)
Awesome. I've been thinking about it more and mre, and I think I definitely am going to.

Cool :)
When are the the A-levels?

Ziggy 12-22-2008 03:26 PM

In a couple of years' time. I'm doing my GCSEs this year, and then I'm going into Sixth Form to do A-levels for two years.

jassian 12-22-2008 06:29 PM

Ah, plenty of time to choose. :)

Ziggy 12-23-2008 03:28 PM

Indeed. :D

RossBeckett 12-24-2008 01:42 AM

3.141592654=Circumference/Diameter


~Steve B.

ohboy 12-24-2008 02:35 AM

Oh yeah? Well if Tom has five apples, and Sally asks for two apples, how many apples does Tom have?

8o Take that, smart math people. :roflmao::lol:nut Sorry, it's 10:30 at night and I've had too much caffeine today.


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