Originally Posted by EasternHeat

I agree to both those statements

but...economics is all about math

haha

Economics is a social science topic and it deals with the business of making, selling and using goods/services.

Originally Posted by ~*Sara*~

Haha, it's really interesting how this topic got side-tracked like that >.<.

Back to math ?

1+1 = 11

Originally Posted by jhan523

Economics is a social science topic and it deals with the business of making, selling and using goods/services.

"business, making, selling"

All involve numbers and formulas, no?

Originally Posted by EasternHeat

"business, making, selling"

All involve numbers and formulas, no?

If you look at it that way then everything can be related to math >.>

Originally Posted by EasternHeat

1+1 = 11

Exactly

Originally Posted by EasternHeat

1+1 = 11

It is if you construct an appropriate ring algebra.

Originally Posted by Mowicz

It is if you construct an appropriate ring algebra.

Lol, the same way 1=2?

Originally Posted by Mowicz

It is if you construct an appropriate ring algebra.

It is if you want it to be

No, if 1 = 2 your system has a contradiction in it. lol

*tempted to post the technical details and construct a system where 2 + 2 = 5* xD

Originally Posted by Mowicz

No, if 1 = 2 your system has a contradiction in it. lol

*tempted to post the technical details and construct a system where 2 + 2 = 5* xD

My math teacher made 1=2 using algebra... but when you look closely he illegally divided by 0. But you don't notice it at first glance because all you see are variables.

Originally Posted by Mowicz

No, if 1 = 2 your system has a contradiction in it. lol

*tempted to post the technical details and construct a system where 2 + 2 = 5* xD

I will reply with this:

Originally Posted by Taunton

0.999 = 1

0.333 = 1/3

3*(0.333) = 3(1/3)

0.999 = 3/3

0.999 = 1

Originally Posted by EasternHeat

I will reply with this:

Except 0.999 =\= 1 in the first place...lol.


However, 0.999.... (going on forever) does infact equal 1! And it can be proven rather easily (though some people just can't accept the fact, haha)

The idea is basically:

1 - 0.9 = 0.1
1 - 0.99 = 0.01
1 - 0.999 = 0.001

...

1 - 0.9999....999 = 0.000...001

...

1 - 0.999... (going on forever) = 0. 000... (going on forever)

So 1 = 0.999... (going on forever).

-----------

And it does seem like witchcraft or bad reasoning, but it shows "the distance between 1 and 0.999...9 shrinks to zero as you add more 9's."

It's one of the weird things that arise when you look at infinite sequences.

Originally Posted by Mowicz

Except 0.999 =\= 1 in the first place...lol.


However, 0.999.... (going on forever) does infact equal 1! And it can be proven rather easily (though some people just can't accept the fact, haha)

The idea is basically:

1 - 0.9 = 0.1
1 - 0.99 = 0.01
1 - 0.999 = 0.001

...

1 - 0.9999....999 = 0.000...001

...

1 - 0.999... (going on forever) = 0. 000... (going on forever)

So 1 = 0.999... (going on forever).

-----------

And it does seem like witchcraft or bad reasoning, but it shows "the distance between 1 and 0.999...9 shrinks to zero as you add more 9's."

It's one of the weird things that arise when you look at infinite sequences.

Is this true for larger numbers as well?

To prove 1+1=2 or 1+1=11 is a breakthrough in math.

If you set up a formal system called Peano Arithmetic (which is a system which behaves 'like we want it to' ... that is 1 + 1 = 2, 254 + 38 = 292, etc.) then a proof of 1 + 1 = 2 isn't very hard to do.

http://mathforum.org/library/drmath/view/51551.html has a proof skeleton, without the mindless technical details (which can be found in the textbook "Outline of Set Theory: Problem Books in Mathematics" by Henle).