Al's Place Quantum Leap Online Community

Al's Place Quantum Leap Online Community (http://quantumleap-alsplace.com/forum/index.php)
-   Off-Topic Forum (http://quantumleap-alsplace.com/forum/forumdisplay.php?f=14)
-   -   Mathematics (http://quantumleap-alsplace.com/forum/showthread.php?t=5090)

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."


All times are GMT -4. The time now is 12:21 PM.

Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright 2000 - 2016 Al's Place Quantum Leap Fan Site | 4.8.15.16.23.42