IIT JEE , AIEEE Forum - Mathematics , Algebra

Aatish

Hey all goiitians...........I have posted this topic so that everyone out there can just give a definition for INFINITY......pls give a definition from your own thinking and dont just copy and paste anything pre-written...............

I hope some positive response,.....

Aatish

Let me start........

I define INFINITY as a symbol that represents the largest no. which anyone can imagine...........

pls post some more definitions.......

tarinbansal

Yaar. what is there to discuss. It has a simple definition. Infinity is relative term. It can only be defined during comparison.
One example to eleborate my definition- Suppose you want to go to USA from Delhi. U can go via plane, it takes 24 hrs. U will not notice the distane much. But you ask an ant to go to USA from delhi and that too walking not in a plane. Now that distance is infinity for the ant but for us its just a very large number and not infinity.

Hope U understood.

Aatish

ok buddy let me ask you just one thing,,,,,,,,,,,,,,,,,,

pls define 0 / 0 ( 0 divided by 0 )

tarinbansal

Mujhse kya pooch rahe ho. Even the greatest mathematicians are not able to define 0/0. That's why its one of the 7 indeterminate forms(whose value cannot be known).
If U think that 0/0=infinity, U are mistaken. There is no defined value of 0/0 till date. May be in the future, someone will find its value.

srujana

Infinity is not any number or something like that....it is just a symbol meaning 'undefined' ....... it is not any arthimetic number (and that is the reason why we cant use mathematical operations on them like multiplication , division etc..)

and also sometimes we people say tan 90 is infinity ..but it is wrong...tan 90 is undefined

Aatish

nice answer srujana........just like that some more answers.....

VivekMSC

Well, infinity is an undefined quantity strictly speaking. In Physics, it assumes a relative role. For eg. a distance of 1micron from the centre of a 1 square metre sheet maybe viewed as infinitely large because the sheet expands indeterminately on either side from that distance.

In Maths, it follows its regular definition of truly being undefined. In limits, many questions have their limit as "infinity", purists say that the limit is undefined while quite a few say that the limit is infinity.

vivsarda

Infinity is the biggest of all numbers
Bt u may then think if we add 1 to it we again get infinite
even infinite + infinite= infinte
So actually m also nt too sure
bt still it can be taken as the biggest possible no known to mankind!!!
WOW NA!!!!

dream_iit

infinity is nt any no.. it is referred to something whose value u can determine

karthik_18049200

well
ok
0/0 is an indeterminate form
indeterminate means we cant find its exact value
example 2.0=3.0.it means 0/0=2/3or3/2
like wise we can find its value but not exact value
clear?
nudge me if u have doubt
rate me if u think useful

btetarbe

Lets see,
infinity and undefined are two different things. For example,
0/0 = undefined and 1/0 = infinity.
Because, 0/0 in common language means divide nothing into no part and 1/0 means that how many times do we add nothing to obtain 1, which can go on forever but we will never get any answer.

rajat.khanduja

Infinity is a number larger than the largest [ or smaller than the smallest( - infinity also exists) ] number anyone can think of.

The symbol used for infinity is also used to express terms that are not defined. like
0/0 or x/0 or tan(

/2), etc.

Hence, not defined should not be confused with infinity

md_2674062

IF INFINITY IS NOT DEFINE THEN WHY SOMETHING /INFINTY IS ZERO.WAIT WHY 1 X INFINITY IS NOT DEFINE

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