10th January 2009

What is

00

Warning: Either dont get confused after seeing the solution or dont see the solution at all....... This might be really dangerous for your limits concept!

38 Answers

1
Philip Calvert ·

what was the warning about [7]

33
Abhishek Priyam ·

[2] no progress here [2]

1
abhijeet sahu ·

i think dat's indefinite

13
MAK ·

let me get a few posts back... as i saw dis one juzz now...

1/0 is undefined and not indeterminate form... as ∞ is not a defined value, but not an indeterminate value...

0/0 is indeterminate form... the other indeterminate forms are 00, ∞∞, ∞/∞, 0∞, ∞0 and 1∞

1
Philip Calvert ·

after much thinking all i can come up with is

ltx→0x0=1

but 00 is undefined

i dont think i am wrong [1]

i KNOW that I am wrong [4]

1
Pavithra Ramamoorthy ·

i got it.....dis s d ans...............

9
Celestine preetham ·

so wats the ans ?

33
Abhishek Priyam ·

@philip

ltx→0x0=1 its indeterminate... not =1

but 0exact/0exact = undefined..

62
Lokesh Verma ·

well it is

1) undefined
2) Indeterminate too...

The thing to not is that there are people who have argued that it is actually 1. There is a sense of consensus among a lot of mathematicians that it is 1.

Why calculators show it as 1? Because they have been programmed using limits of sequences! (Almost always!)

And when you take limit xx x going to 0 ... what will be the answer?

Infact it depends on the calculators as to how they have been programmed to find such limits!!! (basically all calculators do approximations!!!!)

1
Aditya ·

@MAQ
∞∞ is not an indeterminate, it is ∞, isn't it???

1
Philip Calvert ·

i know we can prove x0=1 by writing x0=x/x

but is it perfectly correct !!

maybe im dreaming

gnite ...........
gnite = google nite haha[4] jus kidding
good night

62
Lokesh Verma ·

i thought that this might be confusing for people....

but then u guys are smart ;)

1
Philip Calvert ·

no its not that we were not confused but when you say something like that it can scare us
u know just like 12-1-09 QOTD

so i thot there was something worse than this[1]

11
Devil ·

@ # 6.

Do u think the limit xn where x→1 and n→∞ exists?

6
AKHIL ·

well its a controversial quesn nishant sir!!!!:P

1
J.R. Kunal ·

if 0 is divide d by any no. gives us like 0/1=0....
if any no. is divided by 0 ,ans is ∞ like 1/0=∞..
so 0° can be written as o/o...and from above we can see 2 results are possible...so this value is undefined....

6
AKHIL ·

0/0 is indeed undefined!!!!!!

36
rahul ·

0/0 form in known as indeterminate form...

The error in the proof below is this 0/0 form...

Let a = b
=> ab = b2
=> ab - a2 = b2 - a2
=> a(b-a) = (b+a)(b-a)
=> a = b + a

puttin a = 1, => b = 1 [from the first step]

=> 1 = 1 + 1
=> 1 = 2 .... How?..............

11
Joydoot ghatak ·

when ur telling a = b i.e, a-b=0
how can you cancel (a-b) from both sides... which can b done nly be done by assuming (a-b)≠0.
either a-b=0 or a=b+a...
both can not occur simultaneously..

1
Philip Calvert ·

0/0 is undefined

1
Philip Calvert ·

strangely my program and the calculator say 1
and this is one of the few times im reluctant to agree

1
Philip Calvert ·

even google says that [1]

33
Abhishek Priyam ·

waht is 1...... 1∞ or 00 ?

1
Philip Calvert ·

i think 1∞ should be 1 straight away

but it is ltx→1x∞ that causes problems

33
Abhishek Priyam ·

I think x0 =x/x [7]

so 00 = 0exact/0exact so it is not indeterminate but undefined...

[1]

1
Philip Calvert ·

and thinkin same way for 0 .............

62
Lokesh Verma ·

@philip there is a reason for google to do that

@Pirate: Is ∞ defined for reals??? How something that contains it be?

is it indeterminate or undefined?

33
Abhishek Priyam ·

undefined... 00

62
Lokesh Verma ·

is

0/0 undefined or indeterminate? or both?

33
Abhishek Priyam ·

1∞=1

am i right? (or left [3])

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