Scratch

poopo wrote:

Anything divided by zero = infinity.

No it doesn't, it just can't be answered
If 5/0=infinity, that'd mean infinity*0=5 which isn't true

Also, you firstly can't really use infinity in an equation since it has no true value, and 0.0000000...1 doesn't really exist either, since you can't have infinite 0s followed by a 1 because then the 0s wouldn't be infinite

poopo wrote:

Anything divided by zero = infinity.

the problem with that idea is that no matter how many 0's you pile up youll never get anything more than 0
in order for x/0 to have any real value youd need numbers that increase the value of 0 when multiplied and those numbers, to my knowledge, dont exist

777w wrote:

what would infinity and negative infinity produce when added together
would they cancel each other out or would there be no answer at all

Theoretically it'd equal 0 I suppose (since a number added to its negative equivalent is always 0) but I still think you can't/shouldn't use infinity in an equation

Last edited by RedRocker227 (2013-01-04 21:18:36)

Mokat wrote:

RedRocker227 wrote:

777w wrote:

what would infinity and negative infinity produce when added together
would they cancel each other out or would there be no answer at all

Theoretically it'd equal 0 I suppose (since a number added to its negative equivalent is always 0) but I still think you can't/shouldn't use infinity in an equation

I agree with you there. I don't think infinity can be a number, because infinity+1 is still infinity. Infinity is... well.... infinite. You can always add more numbers on to infinity.

actually i asked my math teacher about it once and she told me infinity plus 1 isnt infinity, its infinity plus 1

Mokat wrote:

RedRocker227 wrote:

777w wrote:

what would infinity and negative infinity produce when added together
would they cancel each other out or would there be no answer at all

Theoretically it'd equal 0 I suppose (since a number added to its negative equivalent is always 0) but I still think you can't/shouldn't use infinity in an equation

I agree with you there. I don't think infinity can be a number, because infinity+1 is still infinity. Infinity is... well.... infinite. You can always add more numbers on to infinity.

you're right. infinity is the same as undefined. but infinity minus itself should equal 0 on the basis of this function

f(x) = x-x

lim f(x) as x approaches infinity = 0.

Firedrake969 wrote:

Technically, 0/0 SHOULD equal 1/1.  This is getting rather offtopic.

no, that's indeterminate form. see my big post above.

777w wrote:

actually i asked my math teacher about it once and she told me infinity plus 1 isnt infinity, its infinity plus 1

that is wrong. you cannot go higher than infinity, because you cannot reach infinity, you can only approach it.

Last edited by Wes64 (2013-01-04 21:25:10)

Firedrake969 wrote:

Infinity isn't even a number.

that has nothing to do with anything i said. it is true, infinity is undefined. but it can still be used in calculation especially with limits. my math is legal.

Last edited by Wes64 (2013-01-04 21:29:51)

Firedrake969 wrote:

Wes64 wrote:

Firedrake969 wrote:

Infinity isn't even a number.

that has nothing to do with anything i said. it is true, infinity is undefined. but it can still be used in calculation especially with limits. my math is legal.

You can't have infinity + 1, I mean.

It equals infinity. Yet, that infinity - normal infinity = 1

RoboNeo9 wrote:

Firedrake969 wrote:

Wes64 wrote:

that has nothing to do with anything i said. it is true, infinity is undefined. but it can still be used in calculation especially with limits. my math is legal.

You can't have infinity + 1, I mean.

It equals infinity. Yet, that infinity - normal infinity = 1

You can't do infinity+1
As Wes64 said, you can never get to infinity so adding to it is pointless and impossible

RedRocker227 wrote:

777w wrote:

what would infinity and negative infinity produce when added together
would they cancel each other out or would there be no answer at all

Theoretically it'd equal 0 I suppose (since a number added to its negative equivalent is always 0) but I still think you can't/shouldn't use infinity in an equation

That's assuming infinity has a value. Infinity+(-infinity)=infinity-infinity=infinity. Done.

Edit: Oh yes, and negative infinity is a contradiction. "Negative" is compatible with "infinity" in neither this universe, nor, I'm pretty sure, in any other.

Last edited by lalala3 (2013-01-04 22:59:53)

Well, actually, I looked it up, and it apparently has different meanings, the one you refer to being possible to have a negative infinity. Pardon me for not doing my research.

lalala3 wrote:

RedRocker227 wrote:

777w wrote:

what would infinity and negative infinity produce when added together
would they cancel each other out or would there be no answer at all

Theoretically it'd equal 0 I suppose (since a number added to its negative equivalent is always 0) but I still think you can't/shouldn't use infinity in an equation

That's assuming infinity has a value. Infinity+(-infinity)=infinity-infinity=infinity. Done.

Edit: Oh yes, and negative infinity is a contradiction. "Negative" is compatible with "infinity" in neither this universe, nor, I'm pretty sure, in any other.

In one universe, the word infinity means bath.  The word bath there means dog.  The word dog there means computer.  etc. etc.

Infinity isn't a number, because if it were, it'd be a paradox.  It would be impossible to has any integers, because there would only be infinity.