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Okay, but you said before infinity is an idea, but it doesn't exist. Now you are saying ideas exist.

I sorta get what you mean there.

Meh, I took preCalculus and I remember all those limits stuff . I'm taking AP Statistics this year rather than AP Calculus because I'm lazy

Main reason why I took it is because it'll raise my GPA and classrank.

Our school doesn't use the standard 4.0 scale GPA system. We use a 5.0 scale system where every point counts. For instance, if you get a 96 in normal (non-AP) english, it would be a 4.6. An 88 would be a 3.8, a 72 would be 2.2, and etc. If you're taking an AP/honors class, just add 1 full point (so a 98 in any AP class would be a 5.8). We base our class ranks off this.

Didn't really read most of the other posts (seemed to be some half assed argument about the definition of existence), sorry.

As far as I'm concerned, yes. In many instances, we need the concept of infinity to move forward in learning. To me, it's just stupid to think there's some impassible barrier that surronds the universe. I believe there is infinit space in the universe. And of course, time can never pause.

Here's something sort of interesting about infinity. The number pi (3 and a bit) goes on for infinite decimal places, and has no pattern. This means that if one were to translate the numbers in pi to letters, every book ever written, every book that will be written, every event in past and in future can be found in pi. What does that mean to a rational person? Absolutly nothing.

Sorry about this post being not really about anything in particular, but I mean, this topic isn't really about anything in particular either.

Tell me, which one is more important. Class rank or knowledge?

There is also another definition of exists. It means "at least one, one and exactly one is there, but there could be more". Since there are many numbers, and we probably will not reach the end of the number system (we can barely wrap our heads around ten to the twenty third), it does exist. Infinty exists until we can reach its end. But since it has no end, it will exist.



Depends on the situation. Each teacher teaches different things. While there are things of common knowledge that everyone learns at that point, some people may or may not know specific details.



Sometimes the school doesn't offer Statistics as an AP course. And for the honours not getting boosteds. Oww. Until you are a freshman in college. Then it does not matter.



You mean the definition of a word exists, but the usage and the way it is used in math does not?
Infinity may be abstract (we can't use any of the five senses to interact with it), but it does exist. It's very much like zero. Why have zero to represent something if it means that we have nothing, in that point in time? Why have infinity if it means something we cannot achieve? We need it because it is something that is a part of our understanding of... anything. Sure there's plenty ofproblems that arise when we use it, but if it means nothing, and that it is unconstructive, we can throw it out. Not even the Romans used the concept of zero.

Ya, like exists as an intangible idea, but not a tangible form.

Scary thing is I understand some of those equations...

CLASS RANK or knowledge. Not Details or knowledge.

Ideas are things that exist but are not tangible. Not hard to understand.

Didn't read anything.

Infinity- Known to exist in Mathmatics
Possibly where the universe ends (AKA Never)

Before we get into hardcore college math, exactly how many of us are few years IN TO college?












... Not much.

That doesn't matter, it's who here actually understands college math. The answer is still the same though.

I said that, so the kids that say they do understand, (and don't know anything at all) won't have room to argue what so ever. I hate it with ignorant people have room to speak, espcially on a subject they're compeltely ignorant about. Wow, you understand the basic idea of binary, you're a mathamatical genius! Only about 2-3 ppl of the here know what the hell they're talking about.

Hey, I think I'm qualified as a Mathmatical genius.

Hmm... I think you mean negative infinity for one of them. Otherwise, the limit does exist.

ok infintey is not a digit, it's a concept.

No. The lim(x-->c) f(x) = L if and only if lim(x-->c+) f(x) = L AND lim(x-->c-) f(x) = L.

In your equation, both the negative and positive side produce the same result, which, by definition, allows for the limit. However, if it produced -L and L, then it woudln't exist. You're confusing the graphs of 1/x with |1/x|.

Wow. I don't understand calculus.

Anyways, from what I know, infinity is a concept, not a number. You can't have "infinity" stones or "infiinity" bottles of vodka. Hiowever, there are infinite amounts of numbers.