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Prove: 1 + 1 = 2

Prove:

1 + 1 = 2

I don't feel like it :redface:

Reply 2

Pencil

16

integral_neo

Prove:

1 + 1 = 2

integral_neo

1 + 1 = 2

Proved.

Reply 3

Whats_The_411?

12

Pencil

Proved.

Well done. :tongue:

Reply 4

Quiksilver

2

1_plus_1_equals_2.gif0.8KB

Reply 5

cobra

14

Doesnt it go back to euclidian rules of geometry, ie a thing of length one unit + a thing of length one unit = a thing of length 2 units, am i right???

Reply 6

Squishy

11

cobra01977

Doesnt it go back to euclidian rules of geometry, ie a thing of length one unit + a thing of length one unit = a thing of length 2 units, am i right???

I thought you used Peano's axioms.

Reply 7

cobra

14

Squishy

I thought you used Peano's axioms.

Mine was a plain guess

Reply 8

Barny

17

My maths teacher had to do this at the beginning of her degree..

Reply 9

Euler

OP

3

imasillynarb

My maths teacher had to do this at the beginning of her degree..

i know the proof is quite complex but I saw the newton proof for this but didnt understand it so i thought someone may know a method which i could understand

Reply 10

ruthiepoothie

11

integral_neo

i know the proof is quite complex but I saw the newton proof for this but didnt understand it so i thought someone may know a method which i could understand

2 + 2 = 4 we know this to be true
therefore, divide the whole lot by 2
1 + 1 = 2

:biggrin:

Ruthie xx

i think i deserve a prize!

Reply 11

Christophicus

18

I did this in yr 10

let a = b

a² = ab Multiply both sides by a

a² + a² - 2ab = ab + a² - 2ab Add (a² - 2ab) to both sides

2(a² - ab) = a² - ab Factor the left, and collect like terms on the right

2 = 1 Divide both sides by (a² - ab)

Reply 12

Nylex

10

Widowmaker

I did this in yr 10

let a = b

a² = ab Multiply both sides by a

a² + a² - 2ab = ab + a² - 2ab Add (a² - 2ab) to both sides

2(a² - ab) = a² - ab Factor the left, and collect like terms on the right

2 = 1 Divide both sides by (a² - ab)

That wasn't the proof he wanted. He wanted 1 + 1 = 2, not 1 = 2.

I don't think you need to prove it, it's just definition.

Reply 13

Euler

OP

3

Widowmaker

I did this in yr 10

let a = b

a² = ab Multiply both sides by a

a² + a² - 2ab = ab + a² - 2ab Add (a² - 2ab) to both sides

2(a² - ab) = a² - ab Factor the left, and collect like terms on the right

2 = 1 Divide both sides by (a² - ab)