Proof that 1 = 2.

Using algebra and a little deception, Mr. John Hush proves (or does he?) that 1 = 2 to a class of amazed calculus students.

Category:

Entertainment

Tags:

• proof;
• 2;
• Mr.
• John
• Hush

[Icegoten40]

This is what made that submarine stop working. It divided by zero.

[danal353]

What an amazing educator! I seriously wish my high school maths classes were this exciting

[ikuyasu]

Haha, I wrote the comment below only at the half point. He explained the exactly the same thing as me in the rest half.

[ikuyasu]

This kind of tricks always involve the division rule that you cannot divide by zero. When you cross out (a-b) term, you are actually dividing both sides by (a-b). What is important is to be aware that "crossing the same terms from both sides" is not the mathematical operation, but just the short hand of diving the same term from the both sides. So, if you do math, then you won't get tricked by this, but if you "draw" lines and so on, then you get tricked.

[Elemesh]

@Elemesh Should probably mention I wrote that before I watched the whole thing. Where's your sense of mystery in not telling the viewer :s ?

[Elemesh]

He divided by a-b, and using the first identity ( a=b ), he divided by zero, which is an undefined operation. Better luck next time Mr Hush!

[Magicalphenomenon]

you cant do that because once you divide an equation by both sides by an unknown of any kind you change the degree of the equation and thus you get 2=1

[blackstars56]

interesting lol