## Excel in math and science

### Master concepts by solving fun, challenging problems.

## It's hard to learn from lectures and videos

### Learn more effectively through short, conceptual quizzes.

## Our wiki is made for math and science

###
Master advanced concepts through explanations,

examples, and problems from the community.

## Used and loved by 4 million people

###
Learn from a vibrant community of students and enthusiasts,

including olympiad champions, researchers, and professionals.

Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

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TopNewestRofl.

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Lolfication of Infinity.Haha

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Ah , Never thought of this :P

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That's a great proof! But you can even create a question in the logic section based on this.

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That's the brilliant mind! it boosted my interest in maths!!

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Congratulations on having one of the only comments with more upvotes then downvotes.

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haha btw thanx for that!!!

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!! <3 maths

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You rocked it !!

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That's the beauty of maths!! ❤️

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Truly

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Best proof EVER!!!!

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XDDDDDDDDD LOLLLLLLLLLLLL!!!!!!

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You sir, just won the internet today. Congrats.

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epic !!

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Amazed by your imagination

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My two favorite things: maths and trolling. ;)

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This is just awesome

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This was a nice one!

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I wonder what would happen if you showed this at school?

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innovative

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HAHAHA!!!!!!!!!!!

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You need to add periods in the title to make emphasis.

Pretty trolly though

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i think the inventor of this needs to get married asap!!

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nice work

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Whoever is making alts and downvoting everyone, you have no life :P Lets see how many downvotes that'll get me. 110? 120? Have a field day :D

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great!!!

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each and every comment has downvotes more than upvotes

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Mine is an exception haha!

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Probably that's also a troll! they want us to rotate it by 180 degrees

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lmaooo

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milf

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Whoa, Is it Original ?

How did you come up with it!!!!

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Doubt it's original. I've seen it on Brilliant multiple times.

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hahahaha this is the best proof ive ever seen....

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Really a great idea to use Physics in proving mathematics rules usually we do converse of it...

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No need to think out of the box if u rotate it

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Why has every comment received so many downvotes?

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And the funny thing is that this comment itself has 10 downvotes.

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I couldn't stop laughing, each and very comment has got soooo many downvotes.

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Woah!! Best Proof Ever.

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Lol

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Comment deleted Feb 10, 2016

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It's for people who don't know cross multiplication.

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Your proof is bad but your handwriting is cool!!

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Let's see you do better. c:

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Cool! I loved the way you did it, I hope we can use such a beautiful method in our exams lol! \(\huge\ddot\smile\)

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Very nice and ingenious proof!!!

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1= sqrt(1) = sqrt(-1

-1) = sqrt(-1) * sqrt(-1) = ii = -1 transitive property: 1=-1 lolLog in to reply