Proofathon Calculus Competition

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Greetings, proofathoners! I was recently inducted as a problem writer in the Proofathon contest, and it really is hard work creating quality problems! That's why we would all appreciate it if you could participate in the upcoming Proofathon Calculus Competition!

It starts tomorrow (6/27/2014) at midnight and ends on the 6th of July, 11:59 PM (all EST). So get going, and sign up here!

To sign up for proofathon, go click the "log in" button, then scroll down to the "sign up" form. Fill in your information, and you're ready to go. Just go to the contests page when the competition starts to begin competing.

We look forward to seeing future proofathoners heading our way!

#Calculus #Proofathon #FUN #Contests #GoodLuck

Easy Math Editor

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.
Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.

Markdown	Appears as
`italics` or `_italics_`	italics
`bold` or `__bold__`	bold
- bulleted - list	bulleted list
1. numbered 2. list	numbered list
Note: you must add a full line of space before and after lists for them to show up correctly
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# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"	# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"

Math	Appears as
Remember to wrap math in `$` ... `$` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$

Comments

The competition starts today! Good luck to all $\ddot\smile$

Daniel Liu - 6 years, 11 months ago

Congratulations Daniel Liu! :)

I am definitely going to participate in this contest.

Pranav Arora - 6 years, 11 months ago

I nose 0 Calculus $\ddot \frown$

David Lee - 6 years, 11 months ago

you know everything :)

Daniel Lee - 6 years, 11 months ago

Are you a mixture of David and Daniel? :D

Bogdan Simeonov - 6 years, 11 months ago

@Bogdan Simeonov – Daniel Liu recently got married to David Lee.

Cody Johnson - 6 years, 11 months ago

@Bogdan Simeonov – He's David's brother.

Daniel Liu - 6 years, 11 months ago

@Bogdan Simeonov – Yeah he my bro (so mean $\ddot \smile$ )

David Lee - 6 years, 11 months ago

Nice to meet you Daniel Lee. Your little bro is pretty pro. :D

Finn Hulse - 6 years, 11 months ago

@Finn Hulse – Daniel won't like that

David Lee - 6 years, 11 months ago

@David Lee – Never mind then Daniel your little brother sucks at math. Better? :D

Finn Hulse - 6 years, 11 months ago

Why does this have so many upvotes

David Lee - 6 years, 11 months ago

@David Lee – Because it's funny :)

Sibling feuds are funny.

Daniel Liu - 6 years, 11 months ago

@Daniel Liu – Never been a greater family comedy than sibling feuds. :D

Sharky Kesa - 6 years, 11 months ago

MWAHAHAHA EDITING MY BROTHER'S POSTS IS AWESOME

btw i edited it and took out the "0"

David Lee - 6 years, 11 months ago

@Daniel Liu , I wanted a clarification regarding question 3 wherein it is asked to obtain the two functions. On integrating, I get some unknown, arbitrary constants for which there isn't any condition to obtain their specific values. So how should I give the answer?

Thanks in advance.

Sudeep Salgia - 6 years, 11 months ago

You may find a specific pair of functions, or a family of possible functions. I'm not sure, since I didn't make the problem, but I think that is what you have to do.

Daniel Liu - 6 years, 11 months ago

This is standard in maths competitions, especially in differential (functional) equations. You should say "for some arbitrary constants [blah blah blah...]"

Hope this helps! :)

Cody Johnson - 6 years, 11 months ago

@Daniel Liu hI Daniel i have actually never participated in this contest but how good should you be to participate in this contest?

Mardokay Mosazghi - 6 years, 11 months ago

It doesn't matter! You can still just do the competition for fun. So you have nothing to lose; just join!

Daniel Liu - 6 years, 11 months ago

Yeah, you can easily pick off 1 or 2 problems without any Calculus knowledge! $\Tiny \text{[deleted by moderator]}$

Finn Hulse - 6 years, 11 months ago

@Finn Hulse why does it say deleted by a moderator

Mardokay Mosazghi - 6 years, 11 months ago

@Mardokay Mosazghi – I do not know.

Finn Hulse - 6 years, 11 months ago

In problem 6, do we have an independence assumption of having that property ?

Abhishek Sinha - 6 years, 11 months ago

Yes.

Daniel Liu - 6 years, 11 months ago

Please incorporate that into the problem statement.

Abhishek Sinha - 6 years, 11 months ago

@Abhishek Sinha – Cody replies that it's implied in the problem statement.

Daniel Liu - 6 years, 11 months ago

@Daniel Liu – No. The problem only specifies the marginals. There could be potentially many joint distributions that have the same marginals.

Abhishek Sinha - 6 years, 11 months ago

@Abhishek Sinha – I'm sorry, if you really have an issue with this contact @Cody Johnson about it. He's the one who can edit. I can't really do anything about it :/

Daniel Liu - 6 years, 11 months ago

@Abhishek Sinha – Okay, I'll incorporate it into the problem statement.

Cody Johnson - 6 years, 11 months ago

@Abhishek Sinha – That problem bugs me. $\Tiny \text{[Deleted, No hints please!]}$ but it gave me an obvious and stupid answer. :P

Finn Hulse - 6 years, 11 months ago

How did the competition go, everybody?

Cody Johnson - 6 years, 11 months ago

does anyone know why can't I sign up for the Proofathon account? I always encounter error 404 page after clicking sign up button

Diang Kameluh - 6 years, 6 months ago

@Cody Johnson

Ahaan Rungta - 6 years, 6 months ago

Please keep all posts on-topic! Any off-topic posts will be deleted. @David Lee Please keep this in mind. If too many off-topic posts are made, this thread will be closed.

Ahaan Rungta - 6 years, 11 months ago

Ahaan, this is a forum for Proofathoners to connect. I think you should be lenient with your moderation. Off-topic comments should be fine.

Cody Johnson - 6 years, 11 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$