ELeeming's wacky world of maths - part 2.

[ELeeming]

Let us consider the infanite sum...

S = 1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1........

hence
S = 1+(1-1)+(1-1)+(1-1)+(1-1)..............
= 1+0+0+0+0+0+0+0+0+..........
=1

But

S = (1+1)-(1+1)-(1+1)-(1+1)-(1+1)-.......
= 2-2-2-2-2-2-2-2-2-2-2-2-............
= - infinity

Hence 1 = - infinity

QED

[Monkeypimp]

uh huh....... (?)

The equations you refer to are fundamentally different.




BTW, negative infinity is zero

[alastair18]

Let us consider the infanite sum...

S = 1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1-1+1........

Thus
S = (1-1)+(1-1)+(1-1)+(1-1)+(1-1)+.......

but
S = 1-(1-1)-(1-1)-(1-1)-(1-1)..............
S = 1 - [(1-1)+(1-1)+(1-1)+(1-1)+(1-1)+.......]
S = 1-S

Therefore S = 1 - S

Therefore S = 0.5

[Ragnarak]

Are you really that **** at maths?

The 2 equations aren't equivalent

You're ignoring the minus sign at the front of the bracket that reverses the addition operations inside the bracket

STOP BEING **** AT MATHS

[Ragnarak]

Originally posted by Ghosteh




BTW, negative infinity is zero

YOU STOP BEING **** AT MATHS TOO :/

[Gayle29uk]

Apples=Oranges

Apples=Bananas

Therefore Bananas=Oranges

Well it makes as much mathematical sense as the original post.

Originally posted by Ragnarak


YOU STOP BEING **** AT MATHS TOO :/

Infinity = everything

Zero = nothing

Therefore zero = - infinity

[Ragnarak]

Originally posted by Ghosteh



Infinity = everything

Zero = nothing

Therefore zero = - infinity

STOP BEING **** AT MATHS

[Grimble]

Originally posted by Ragnarak


STOP BEING **** AT MATHS

I wish the mods would just replace every post in both the "wacky world of maths" threads with this, it sums it all up nicely

[Ragnarak]

Originally posted by Grimble


I wish the mods would just replace every post in both the "wacky world of maths" threads with this, it sums it all up nicely

i like to feel that i'm doing my part

Originally posted by Ragnarak


STOP BEING **** AT MATHS

Explain and I will stop

[Ragnarak]

Originally posted by Ghosteh


Explain and I will stop

-infinity is not 0

0 is 'in the middle'

with infinity off to the far right on the number line and minus infinity off to the far left

there is nothing else to explain

[Booge8]

Originally posted by Ragnarak


-infinity is not 0

0 is 'in the middle'

with infinity off to the far right on the number line and minus infinity off to the far left

there is nothing else to explain

except those cool little imaginary number things which go up and down

[Ragnarak]

Originally posted by Booge8


except those cool little imaginary number things which go up and down

i'm not talking bout the argand plane

i was talking about the (<pedant>real</pedant>) number line

[Sarina_Joy]

Originally posted by ELeeming

Firstly

S = (1+1)-(1+1)-(1+1)-(1+1)-(1+1)-.......


THAT IS WRONG

Secondly

The sequence is divergent, and therefore you can not give any answer for what S is equal to. You could give a partial sum for the first n terms, the answer would either be 1 or 2 (1 for odd values of n, and 2 for even values)

[ELeeming]

Originally posted by Sarina_Joy


Firstly

S = (1+1)-(1+1)-(1+1)-(1+1)-(1+1)-.......


THAT IS WRONG

Secondly

The sequence is divergent, and therefore you can not give any answer for what S is equal to. You could give a partial sum for the first n terms, the answer would either be 1 or 2 (1 for odd values of n, and 2 for even values)

Are you seriously in 4th grade?

[Sarina_Joy]

Yes :)))

My website is in my sig - take a peek :))))

[Ragnarak]

Originally posted by Sarina_Joy
Yes ))

My website is in my sig - take a peek )))

'telling lies makes baby jesus cry'

[Tietäjä]

Originally posted by Ghosteh



Infinity = everything

Zero = nothing

Therefore zero = - infinity

Actually, negative infinity is the highest negative number that can exist. At least that's what I was taught.

Infinity > Negative Infinity
Infinity > Zero
Zero > -Infinity
Thus zero can't be equal to negative infinity.
As infinity cannot be zero.

Gosh.

Question,

Is zero a number?

i know fk all about maths, so kindly enlighten me

[Tietäjä]

Originally posted by ÐiSCoRPoRaTioN
Question,

Is zero a number?

i know fk all about maths, so kindly enlighten me

Yes?

[Sarina_Joy]

Originally posted by ÐiSCoRPoRaTioN
Question,

Is zero a number?

i know fk all about maths, so kindly enlighten me

Yes

0 is a member of the set of integers {....-4, -3, -2, -1, 0, 1, 2, 3, 4....}

This is a subset of the real numbers.

However 0 is not a member of the natural numbers {1, 2, 3, 4, 5.....}

[W]

Originally posted by Tietäjä


Actually, negative infinity is the highest negative number that can exist. At least that's what I was taught.

Infinity > Negative Infinity
Infinity > Zero
Zero > -Infinity
Thus zero can't be equal to negative infinity.
As infinity cannot be zero.

Gosh.

Originally posted by Ragnarak


STOP BEING **** AT MATHS

[Ragnarak]

beat me to it :/

[Sardaukar]

and he had to quote it

[Deathjam]

AND THIS IS WHY ART ROCKS

[menth0l]

this one is even more **** than your first one.

[Miserableman]

Originally posted by Ghosteh



Infinity = everything

Zero = nothing

Therefore zero = - infinity

0 = 1/infinity, not negative infinity

[MrL_JaKiri]

Originally posted by ELeeming

Subtraction is not commutative.

Originally posted by Sarina_Joy



Yes

0 is a member of the set of integers {....-4, -3, -2, -1, 0, 1, 2, 3, 4....}

This is a subset of the real numbers.

However 0 is not a member of the natural numbers {1, 2, 3, 4, 5.....}

But its not negative either?

[MrL_JaKiri]

0 is not a 'natural number'. It is a 'real number'. Negative infinity =/= 0. Infinity =/= everything. 1/0 =/= 'infinity'. 1/0 is an undefined operation.

Originally posted by MrL_JaKiri
0 is not a 'natural number'. It is a 'real number'. Negative infinity =/= 0. Infinity =/= everything. 1/0 =/= 'infinity'. 1/0 is an undefined operation.

Could you explain to me in PM?

I lack the mathematical knowledge to understand this =\

[at0mic.c0w]

Originally posted by Sarina_Joy
However 0 is not a member of the natural numbers {1, 2, 3, 4, 5.....}

0 is a natural number - at least when u use sets to define what natural numbers actually are.

[Ragnarak]

ÐiSCoRPoRaTioN

=/= means not equal to

what Mr_L wrote should make sense to you now

hopefully

[Cyp]

0=-0
1/0=1/-0
1/0=-1/0
1=-1
0=2
0=1
2+2=2+2+1
2+2=5

This either proves that 2+2=5, or supports the claim that 1/0 is undefined unless you define it yourself first, and really know what you're doing...


=/= &equiv; &ne;

[Jennifer]

there are some sums of series that depends on the order you add them

which i think was the point of the original post

[Ragnarak]

Originally posted by Jennifer
there are some sums of series that depends on the order you add them

which i think was the point of the original post

you're giving him too much credit

[Ragnarak]

Originally posted by Cyp



=/= &equiv; &ne;

showoff

[ELeeming]

Originally posted by Ragnarak


you're giving him too much credit

Originally posted by Ragnarak
ÐiSCoRPoRaTioN

=/= means not equal to

what Mr_L wrote should make sense to you now

hopefully

It does. Sort of. It still doesn't answer my question =\

(I know what =/= means )

[menth0l]

what could you possibly not understand?

[ELeeming]

Originally posted by menth0l
what could you possibly not understand?

How this thread is still alive?

[Cyp]

Originally posted by Ragnarak


showoff

Thankyou.

[Sarina_Joy]

Originally posted by at0mic.c0w


0 is a natural number - at least when u use sets to define what natural numbers actually are.

No.

0 is not a member of the set of natural numbers. You may be referring to the set of 'whole numbers' but this is not a commonly used set. btw


God how I wish I could use proper mathematical notation on these boards :(((((

[pablissimo]

Zero is a member of N (Imagine its got another little line on it like)
Zero is not a member of N+.

Or so I'm informed

Edit:
http://hemsidor.torget.se/users/m/ma...um/natural.htm

Google is my friend

[Sarina_Joy]

it's a lively debate

[pablissimo]

Yeah, we keep getting it drummed into us by one lecturer that zero is, and another that it isn't. Doesn't matter as long as you define what you're doing properly...

Having said that I've shat enough questions up before now not remember whether it was or wasn't in

[Sarina_Joy]

As far as I am concerned (and as far as I have been taught) 0 is NOT a member of the set of natural numbers. Thus, unless the question or example specifically includes it, I shall not.