Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#126 Re: Dark Discussions at Cafe Infinity » Tips for revising and exams » 2007-01-05 22:56:29

rida wrote:

The best thing to do is stay calm.

But, for many I know at least, als othe hardest.

#127 Re: Maths Is Fun - Suggestions and Comments » Forum Enhancements » 2007-01-05 10:20:44

MathsIsFun wrote:

...but that you only have 5 points you can give in any month, and you can't give to the same person twice in a row.

... or yourself, I guess? tongue

#128 Re: Euler Avenue » Strange things about Xeno's Paradox » 2007-01-05 10:18:15

mathsyperson wrote:

I think Zeno is more clever than you're giving him credit for. He obviously didn't actually believe that his assertions were true - he just made them and then used the real world to contradict them. Hence it being called Zeno's paradox instead of Zeno's theorem.

Zeno liked to make up things that used apparently sound mathematics and yet that were clearly false, to annoy all the mathematicians of the time. A more famous example is of the tortoise and the athlete, although the reasoning used is kind of similar.

Well, that's exactly my point! It doesn't really contradict the real world, or the world as we experience it anyway, because the premises are wrong. This is one of the things that can qualify a statement as a paradox, so Zeno succeded in making a paradox I guess. Though, I don't think it's of any importance to mathematics, only to the study of rethoric.

#129 Re: Introductions » Not a new member, but oh well....time to re-introduce myself » 2007-01-05 07:10:32

insomnia wrote:

Computer - Blew up. Then I tried to fix it with a hammer. It didn't work

Well, had the same thing happening with an iPod. Used a hammer, and gravity plus a window at seventh floor, same result as you.

insomnia wrote:

I think i remember devante .......vaguely.........about as much as i remember new years eve....

Can't say I feel any different about that particular night... I'm not sure if that's good or bad to be honest.

I think I remember you starting to become less active around the time I started becoming active.
Anyway, welcome back.

#130 Re: Euler Avenue » Strange things about Xeno's Paradox » 2007-01-05 06:59:35

Ricky wrote:
Patrick wrote:

Because it's implying that moving a half unit is a seperate action from moving the whole unit. An action that has to be done on it's own and before the other.

Are you saying that to move a half unit, one must also move a full unit?  Because if that isn't the case, then they are separate actions.

Okay, you got me wrong there. I thought you would understand that all I was saying, was about the case where the goal was to move one unit. In that process, the half unit movement is a part of the full unit movement, not a seperate process.

#131 Re: Help Me ! » Equation of the line » 2007-01-04 09:59:36

What's your problem Kiran? smile

#132 Re: Euler Avenue » Strange things about Xeno's Paradox » 2007-01-04 07:59:38

Because it's implying that moving a half unit is a seperate action from moving the whole unit. An action that has to be done on it's own and before the other.

#133 Re: Euler Avenue » Strange things about Xeno's Paradox » 2007-01-03 23:56:19

Well, as I see it, Zeno of Elea(it's not Xeno) got this all wrong. Instead of saying before you can move one unit, you have to move a half unit, you should be saying when you move one unit you also move a half unit.

#134 Re: Euler Avenue » Strange things about Xeno's Paradox » 2007-01-03 02:43:17

Wikipedia wrote:

What the paradox says is that if you are walking 5 feet, you must first move 2.5, then 1.25, then 0.625, etc, dividing by 2, and never reaching 0 because division doesn't reach 0. But humans don't walk via division of distance. We walk via subtraction of step length from distance. So if we take 1-foot steps, our objective is 5 feet away, then 4, then 3, and eventually we're there.

What you have to remember, is that Zeno was trained in argueing, not math(primarily anyway).

#135 Re: Maths Is Fun - Suggestions and Comments » !!!! » 2007-01-02 08:44:09

Well, I don't know if it's possible with PunBB (or wanted at all). You'll have to wait 'till Rod comes around, I guess.

#136 Re: Help Me ! » 1/pi » 2007-01-02 04:45:58

krassi, please say you don't have those formulae in your head..

#137 Re: Dark Discussions at Cafe Infinity » Where is your dream place to live in? » 2006-12-31 00:35:39

Toast wrote:

Lol, I would feel isolated living in space, even amongst others.

I would live in virtual reality, too bad it just... isn't real...

Well, what is, right? Even what you think is real, is just an interpretation, of the 'real' world, made by your brain.

#138 Re: This is Cool » Funny E and Pi video clip » 2006-12-31 00:33:43

Haha.. It wasn't me, i[sic] did it! ... Don't even listen to him, he's Greek!

#139 Re: Maths Is Fun - Suggestions and Comments » Xmas-Chess » 2006-12-28 23:47:03

LQ wrote:

Yeah, well if your so interested, why don't you try it?
My rules will still exist on this forum, and knitted caps are as good as expensless and like only used at christmas. When it comes down to it, the only value is credit. And it is mine. And It's not worth patenting. Since it costs 2000$. Not to mention demand cost popularity curve. And my rules are cheaper to buy, cause I decide the price. And I can since I've got copyright. And surely copyright applies to every important part of my text, and there is like no way that you can reformulate that simpler. And the copyright is like appliable to all languages.

Apparently you didn't understand it at all. First of all, I'm not that interrested in the game. Second of all, buying your rules wouldn't be cheaper, because I don't even have to. I could just use them, no problem. Copyright applies only to a finished product, not an idea.


MathsIsFun wrote:

Say you wrote a book about kids going to a magic school ... would that infringe/violate/whatever the Harry Potter copyright?

How close could you get before you do get in trouble?

Plagiarism can be treated as an infringement of copyright, but doesn't always.

#140 Re: Euler Avenue » Inequalities » 2006-12-26 21:53:58

Analytic Inequalities at Amazon.com. This looks like a very interresting book. Might buy it smile

#141 Re: Maths Is Fun - Suggestions and Comments » Xmas-Chess » 2006-12-26 13:14:35

LQ wrote:

Upphovsrättslagen? (use a swedish english dictionary)

It works like this: you are my friends, I play christmas chess, you play christmas chess, I came up with it and was the first to make the design, so eventually, not to say directly I get "upphovsrätt".

No need for a dictionary here, I'm Danish smile (It's "Opretslov" in Danish by the way, and Rod it is in fact "Copyright"). I think you've misunderstood it. It is, as you say, selfdeclaring, but it does not apply to ideas. I'll give an example: You say you've made the pieces already. Now, what the copyright does, is to ensure that I don't copy your pieces 1:1. By this I mean that I have the right to make a new game called "Taskespillet", make pieces accordingly, and then use the same rules you created.
Say you had actually produced a final game. Along with the game itself, was put a booklet with the rules. Now, I would not be allowed to copy the text itself, but it would be perfectly legal for me to write the same rules with different words.


"Okay, so if this is true, how can people make money off their products?" You might ask. Well, this is where patents come into the picture! You can actually own an idea. I'm not getting into wether I think this should be possible or not, but you can. An idea can be patented, and then you would be right. In that case I would not be able to just alter the words, since the idea would actually be more or less the same.

#142 Re: Maths Is Fun - Suggestions and Comments » Xmas-Chess » 2006-12-25 10:29:11

LQ, I think it's a bit complicated for a christmas-only game... Also, the thing about the 3% made me laugh, I'm very sorry, but it did. What law are you referring to by the way?

#143 Re: Dark Discussions at Cafe Infinity » Whats your definition of art? » 2006-12-23 22:22:53

Art is a way for an artist to express ideas or feelings.

edit: ... to an audience.

#145 Re: Dark Discussions at Cafe Infinity » Spam growing alarmingly » 2006-12-22 23:06:18

Rod, when we're talking spammers, we're talking serious business. Hiding a process, so it doesn't show in the taskmanager, is a rather easy job for a programmer. The problem here, I think, is the amount of knowledge you need about computers to use one. If Microsoft, whos software I'm guessing most people are using, gave you too much information, you'd get confused. If people got confused, they might not choose Microsoft, and that wouldn't be too good, would it?

Also, Devanté, as it's already been said, sending to invalid adresses takes way more time. But even with fake e-mails, it's not really a problem for the spammers. There are plenty of company and university servers, not to mention internetconnections(100mbit typically for big companies), out there to exploit. This is how the warez(we're talking scene here) works, so it should work for spammers aswell.

When we're talking about defending ourselves, there's two major problems. First of all, the defenses 'we' have to make, can only be made when the hackers(crackers) create an exploit, so we're allways many steps behind. Secondly, and this is not a fact but I'm very sure, the programmers we call hackers or crackers are simply more skilled. We're talking people who've devoted their lives to this, and they know protocols, coding languages and processor architures like their own pockets.

#146 Re: Dark Discussions at Cafe Infinity » Firefox 2 » 2006-12-21 11:49:26

It's ctrl-tab, like it's always been smile and ctrl-shift-tab for going the other way

#148 Re: Dark Discussions at Cafe Infinity » My avi » 2006-12-18 07:47:36

suha wrote:

Well How Is My New Avatar

Who's the baby?

#149 Re: Puzzles and Games » Bunny Game » 2006-12-17 17:47:02

103760
Awesome game with awesome music big_smile Off to school, and then home to play this smile

#150 Re: This is Cool » Cool Subtraction For Kids » 2006-12-17 08:13:09

Devanté wrote:
mathsyperson wrote:

Seriously? You'd start at 123 and count until you got to 456? That would take you ages and be fairly pointless, considering the triviality of the sum. I'm probably misunderstanding you. Any other way though, and you'd have to do it in more than one step.

A bit like number lines. For 456-123, I would do: 123 + 300 + 33.

Hard to explain.

Now I think I get it smile  to give another example:
521-214

you'd do:
214+300+7= 521

so the difference is 307

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