1+1=1?

Anders Englund

Second Unit
An oldie, but fun:

a = 1
b = 1

This gives us:
a = b

Now multiply both sides by a:
aa = ab
a^2 = ab

Subtract both sides by b^2:
a^2 - b^2 = ab - b^2

The conjugate rule now gives us:
(a + b)(a - b) = ab - b^2

Extract b on the right side:
(a + b)(a - b) = b(a - b)

Divide both sides by (a - b):
a + b = b

or in other words:
1 + 1 = 1

--Anders

Scott L

Senior HTF Member
You are correct 1+1=1.

Morgan Jolley

Senior HTF Member
You're not supposed to divide by variables for the reason illustrated above. In the step:
Extract b on the right side:
(a + b)(a - b) = b(a - b)

Divide both sides by (a - b):
a + b = b
(a - b) is equal to 0, which means that dividing both sides by 0 would give you an undefined value on both sides. So you haven't done anything special, just broken fundamental rules.

Man, I love math too much.

Mat_M

Stunt Coordinator
Yep, can't divide by zero...I had a math teacher try to pull this on my back in the day, but a few of us caught him.

BrettB

Senior HTF Member
So, 1 + 1 still = 2?

Thank goodness, what a relief.

Ron-P

Senior HTF Member
I need a beer!

Peace Out~

dave_brogli

Screenwriter
i was running around going crazy for a sec... i think im still confused

Alex Spindler

Senior HTF Member
I had a 1+1=1 situation once. Formatting in excel was showing .5 + .5 = 1 as 1 + 1 = 1 because of rounding.

Danny Tse

Senior HTF Member
Brain ache!!

Eric_E

Supporting Actor
Because the higher the fewer.

MikeAlletto

Senior HTF Member

1+1+1+1=1

It was supposed to mean something and spent thousands and thousands of dollars on some ad company to come up with it, but in the end even the employees never understood what the point was.

Max Leung

Senior HTF Member
If you didn't know the values of a and b, and you were given a + b = b, it is clear that a and b both cannot be one. In fact, a has to be equal to zero.

We have:

a + b = b

If we want to know what a is, we must subtract b from both sides:

a + b - b = b - b

Therefore:

a = 0

Steven K

Supporting Actor
Little Timmy took a drink
But he'll drink no more
Cause what he thought was H2O
Was H2SO4

Wayne Bundrick

Senior HTF Member
Uh, you're in the wrong classroom. This is math. Chemistry is down the hall. Just follow your nose, the seniors are making stinkbombs.

James T

Screenwriter
We had to do questions similar to 1+1=1 in a Proofs class.

Is it believable that a three-legged chicken can talk?

Shane Bos

Second Unit
Here I always thought that 1 + 1 = 10

What Ron-P said!

MarkHastings

Senior HTF Member
Shouldn't this be in the Math forum?

I still think the answer is \$1.00