Problem Writing Party: March 14 - March 27th - Andrew Ellinor

This party is now over. Thanks for your contributions. You can see what we chose by joining the next party!

Greetings Problem Partiers!

Problem Writing Party number four went splendidly! Even though only three community quizzes were made, we are so close to creating a handful of others. With that in mind, we'll be recycling some of the topics from previous problem writing parties. A special thanks to Zeeshan, Jonas, Hobart, Svatejas, Nihar, Toto, Rohith, Deepanshu, Lakshya, ZK, Chung, Anish, Rishabh, Brandon, Margaret, Neelesh, Akhil, Manmeswar, Arjen, Lee, Kerry, Sridhar, Kunal, Hjalmar, Soumava, Worranat, Pranshu, Mehul, and Samarth for all your contributions!

Here are the 3 quizzes that you all helped create:

New Brilliant Challenge Quizzes

Floor and Ceiling Functions: Level 3

3D Coordinate Geometry: Level 3

Introduction to Recursion: Level 2

We'll be showcasing these quizzes all over social media in the coming weeks because these problems truly are impressive. Okay, announcements over. Let's kick off the fifth Problem Writing Party!

How it Works

The party starts right now (March 14th, 2016) and will last for the next two weeks. Throughout the two weeks, we will be focusing on writing awesome problems for the topics listed in quizzes that need your help on the publish page.

To join, submit as many problems as you want to these listed topics. At the end of the party, Brilliant staff will be picking the best 5-10 problems for each topic. These problems will then be immortalized and formed into a challenge quiz. If we pick your problem, then you can brag to your friends because it will be displayed on Brilliant forever! Your problem has a better chance of being selected if you include a graphic (when appropriate) and a solution.

Use this note to

Ask questions about the party or brainstorming ideas from Brilliant staff.
Share links to great relevant problems.
Bounce your ideas off each other to help formulate the best problem you can.

To be selected, problems you submit should be fun and challenging to a student in levels 1-3 for the given topic.

-------->This Party's Topic Listing<--------

The topics of problem submission for this party can be found by navigating over to the Brilliant publish page and checking under the quizzes that need your help section. Just click the contribute button next to the topic you want to make a submission to.

Happy writing and continue to party on!

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My contribution to this party, Algebra-Functions:

Composition of two invertible functions

Domain of inverse of composition

A function in two variables

Just invert the function – Kazem Sepehrinia · 1 year, 6 months ago

@Kazem Sepehrinia – Great problems! I liked third one the most. Thanks :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thank you Sandeep :) – Kazem Sepehrinia · 1 year, 6 months ago

Comment deleted Mar 29, 2016

@Ashish Siva – Oh my God! – Zeeshan Ali · 1 year, 6 months ago

@Zeeshan Ali – Thanks: -) – Ashish Siva · 1 year, 6 months ago

Welcome to my mysterious function problem: The Hidden Function.

Can you work out what \(f(x)\) is? ;) – Worranat Pakornrat · 1 year, 6 months ago

My entries

Functional equation I

Functional equation II

Functional equation III – Félix De Montemar · 1 year, 6 months ago

@Félix De Montemar – Nice set of questions ;) – 展豪張 · 1 year, 6 months ago

Here's some of my function problems:

Function Challenge 2!

Function Challenge 3!

Function Challenge 4 (Inverse functions)

Function Challenge 5 (Function graphs) – Tan Kenneth · 1 year, 6 months ago

My new problem on Geometry-Coordinate Plane has come: The Tale of Two Trigones.

Can you find the area of the two? ;) – Worranat Pakornrat · 1 year, 6 months ago

\[ \text{You will enjoy solving these problems, believe me..} \]

Computer Science \( \rightarrow \) Types and Data Structures \( \rightarrow \) Graphs \( \rightarrow \) Can you count edges ?

Computer Science \( \rightarrow \) Types and Data Structures \( \rightarrow \) Graphs \( \rightarrow \) Identify the graph

Computer Science \( \rightarrow \) Types and Data Structures \( \rightarrow \) Graphs \( \rightarrow \) Identify the Adjacency List – Zeeshan Ali · 1 year, 6 months ago

@Zeeshan Ali – I guess believing you is worth. Thanks for the awesome problems. :) – Sandeep Bhardwaj · 1 year, 6 months ago

Algebra \( \rightarrow \) Functions \( \rightarrow \) Domain of 'fog'

Algebra \( \rightarrow \) Functions \( \rightarrow \) Let's get rid of Radicals

Algebra \( \rightarrow \) Functions \( \rightarrow \) Which type of function is it? (I)

Algebra \( \rightarrow \) Functions \( \rightarrow \) Restrictions on Domain

Algebra \( \rightarrow \) Functions \( \rightarrow \) Cute Function – Zeeshan Ali · 1 year, 6 months ago

@Zeeshan Ali – What a cool set of problems! This is really a wonderful contribution. Thanks! :) – Sandeep Bhardwaj · 1 year, 6 months ago

My entries :

Relative SHM...coming soon – Kishore S Shenoy · 1 year, 6 months ago

@Kishore S Shenoy – The "Chain Reaction 1!" and "Chain Reaction 2!" initially gave me a feeling of chemistry. LOL! By the way great problems esp the SHM problems. Thanks! :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Your welcome! :) – Kishore S Shenoy · 1 year, 6 months ago

This is my entry for the co-ordinate part - Lets Draw the figure , Circle or Vieta's – Aditya Narayan Sharma · 1 year, 6 months ago

@Aditya Narayan Sharma – I guess the coordinate part is 3-dimensional coordinate geometry. Anyways, nice problems. Looking for more problems from the topics listed. Thanks! :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thanks sandeep sir ! I am working on the functions – Aditya Narayan Sharma · 1 year, 6 months ago

Here's my entry for the party.

Topic functions: functions and more functions

Another problem(might be off topic): perfect square in polynomial form – Neelesh Vij · 1 year, 6 months ago

@Neelesh Vij – Thanks for your submissions Neelesh! They look like a good start, but let me give you some feedback. When you visit the topic list for this party, note that functions is listed under algebra. So as awesome as it is, the problem you posted for functions requires calculus and might be useful for a later party.

As for the second problem you submitted, it doesn't happen to fit any of the topics we listed. :P

Keep it up though! I like both of these problems and had fun solving them. – Andrew Ellinor · 1 year, 6 months ago

@Andrew Ellinor – I Will Post some cool coordinate and SHM Problems By Tomorrow – Prakhar Bindal · 1 year, 6 months ago

@Andrew Ellinor – sorry for wrong submission! i'll keep it in mind and soon put up some problems – Neelesh Vij · 1 year, 6 months ago

Two new problems:
Capacitors - Pulling apart a capacitor
Coordinate plane - Oblique Coordinates

Two old problems, updated with improved wording and solutions:
Calculus of Parametric equations - Area, Arc length – Pranshu Gaba · 1 year, 6 months ago

@Pranshu Gaba – Thanks Pranshu! :) – Sandeep Bhardwaj · 1 year, 6 months ago

My latest question on Geometry-Coordinate Plane: Cut Through the Circle.

Hope it's not too late. ;) – Worranat Pakornrat · 1 year, 6 months ago

@Worranat Pakornrat – Great, thanks! And it's not too late ;) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thanks! Glad to see you again. ;) – Worranat Pakornrat · 1 year, 6 months ago

@Worranat Pakornrat – I'm glad too to see you again and again. ;) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Lol...;) – Worranat Pakornrat · 1 year, 6 months ago

One more original contribution: Andrew did not provide enough information! – Nihar Mahajan · 1 year, 6 months ago

@Nihar Mahajan – Thanks Nihar! Andrew is enjoying the names of your problems. ;) – Sandeep Bhardwaj · 1 year, 6 months ago

Here is my submission on functions. – Brilliant Member · 1 year, 6 months ago

@Brilliant Member – Thanks @Svatejas Shivakumar for the nice problem! – Sandeep Bhardwaj · 1 year, 6 months ago

This is my new one on Calculus-Parametric Equation: Dorothy's Flying!.

Enjoy! ;) – Worranat Pakornrat · 1 year, 6 months ago

@Worranat Pakornrat – Great one! – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thanks! ;) – Worranat Pakornrat · 1 year, 6 months ago

Sorry for being late and for the original problems but Civil Engineering department give me little time to live my life. Anyway hee is my entries . For floor function floor square sum For SHM SHM problem For Waves Waves problem – Refaat M. Sayed · 1 year, 6 months ago

@Refaat M. Sayed – LOL, your department is so strict. They should give you, at least, one life to live. Thanks for the great problems that you managed to contribute even being tight scheduled. Thanks! :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thanks Sandeep :) – Refaat M. Sayed · 1 year, 6 months ago

Comment deleted Mar 22, 2016

@Ashish Siva – Thanks Ashish for the nice problem. Looking for more from other topics too. Thanks :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – I have combined them and posted it again. – Ashish Siva · 1 year, 6 months ago

@Sandeep Bhardwaj – You're welcome. It was my duty and pleasure. :-) – Ashish Siva · 1 year, 6 months ago

Here is something for Functions – Hjalmar Orellana Soto · 1 year, 6 months ago

@Hjalmar Orellana Soto – Played nicely with square root and modulus. Thanks for the nice problem. :) – Sandeep Bhardwaj · 1 year, 6 months ago

Just got a very simple function question for beginners. inspiration never stops – Margaret Zheng · 1 year, 6 months ago

@Margaret Zheng – Wonderful problem with the coolest name. Thanks :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thanks for the compliment! – Margaret Zheng · 1 year, 6 months ago

@Margaret Zheng – Just type the name you want to link within [] brackets, then paste the url in ()brakets. :-) – Ashish Siva · 1 year, 6 months ago

@Ashish Siva – Thank you so much!:D – Margaret Zheng · 1 year, 6 months ago

@Margaret Zheng – Welcome, it was my pleasure – Ashish Siva · 1 year, 6 months ago

My Contribution is : One sided limits – Yash Khatri · 1 year, 6 months ago

@Yash Khatri – I guess you provided the wrong link. Can you please look for that? Thanks! – Sandeep Bhardwaj · 1 year, 6 months ago

Here is an old problem of mine in functions : Here . – Anish Harsha · 1 year, 6 months ago

@Anish Harsha – Thanks Anish! – Sandeep Bhardwaj · 1 year, 6 months ago

My second problem contribution: For the SHM quiz (maybe its a tad bit difficult):

'2. Wobbly ellipse – Adwait Godbole · 1 year, 6 months ago

@Adwait Godbole – Thanks @Adwait Godbole for your contribution!

BTW you have got a wonderful name. :) – Sandeep Bhardwaj · 1 year, 6 months ago

This is my contribution to the party: Its a problem for capacitors quiz.

A really small change

– Adwait Godbole · 1 year, 6 months ago

@Adwait Godbole – Thanks! :) – Sandeep Bhardwaj · 1 year, 6 months ago

My contribution to capacitors section. – Rohit Ner · 1 year, 6 months ago

@Rohit Ner – Thanks Rohit for the contribution on capacitors! – Sandeep Bhardwaj · 1 year, 6 months ago

Here's mine for Functions

Who developed the mod function? – Mayank Singh · 1 year, 6 months ago

@Mayank Singh – Thanks @Mayank Singh :) – Sandeep Bhardwaj · 1 year, 6 months ago

Here's my entry for the party:
Functions...(functions) – 展豪張 · 1 year, 6 months ago

@展豪張 – Thanks for all of your cool problems. :) – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Thanks for trying all of them :) – 展豪張 · 1 year, 6 months ago

@展豪張 – Another entry:
Coordinate Geometry – 展豪張 · 1 year, 6 months ago

@展豪張 – Another entry:
Functional Equation(functions) – 展豪張 · 1 year, 6 months ago

Here's one The mysterious point And another Think you know the ellipse? Think again Both are coordinate geometry. – Deeparaj Bhat · 1 year, 6 months ago

@Deeparaj Bhat – Great ones, thanks! – Sandeep Bhardwaj · 1 year, 6 months ago

Here you go for Functions:- Squares R.I.P . And thanks for the mention c: – Kunal Verma · 1 year, 6 months ago

@Kunal Verma – Nice problem, thanks! – Sandeep Bhardwaj · 1 year, 6 months ago

Here's my entry, since functions are the only thing i know from the choices:

Functions: Annual Growth

It might be kind of easy.

For my second functions entry, here's The Donut Upsurge.

And for my third functions entry, here's A Sluggish Download

I'm not sure if this can classify as Algebra or Number Thoery, but functions can be applied to it so... Just enjoy The Summation Secret

And for my data representation entry: Dessert Survey – Gian Tuazon · 1 year, 6 months ago

@Gian Tuazon – Wowww! Thanks for your amazing contribution. :) @Gian Tuazon – Sandeep Bhardwaj · 1 year, 6 months ago

Here's mine

Cool 3-D problem

3-D Coordinate geometry

One more 3-D problem

Angle in 3-D – Akshay Sharma · 1 year, 6 months ago

@Akshay Sharma – Cool problems! Thanks @Akshay Sharma – Sandeep Bhardwaj · 1 year, 6 months ago

Calculus of parametric eqns.

I wish the car stayed still...

– Hobart Pao · 1 year, 6 months ago

@Hobart Pao – Fun problem, liked it very much. Thanks! – Sandeep Bhardwaj · 1 year, 6 months ago

Here is my entry for Coordinate Geometry:

https://brilliant.org/problems/a-problem-by-soumava-pal-3/?ref_id=1147246 – Soumava Pal · 1 year, 6 months ago

@Soumava Pal – Thanks @Soumava Pal for your contribution! – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – @Sandeep Bhardwaj Sorry sir, I could not give more problems because my class XII board examinations were going on. Looking forward to the next problem writing party. I will be back with more problems. – Soumava Pal · 1 year, 6 months ago

@Soumava Pal – Never mind! I am aware that most of the guys were have exams in the time period of this party. And I know that the next party will be the best party as yet. :)

I hope that you did great with your exams. – Sandeep Bhardwaj · 1 year, 6 months ago

@Sandeep Bhardwaj – Yes, everything went good, except physics. Got a bit short on time. :P Yes the next party is gonna be fun because everyone is gonna be active after these exams. – Soumava Pal · 1 year, 6 months ago

@Soumava Pal – Don't worry, even your one contribution helps a lot :) – Nihar Mahajan · 1 year, 6 months ago

@Nihar Mahajan – @Nihar Mahajan
Thank you for that. Though I am not too good in coordinate, and the property I used in this problem is one of the very few that I know. XD – Soumava Pal · 1 year, 6 months ago

Sir, where should i publish – Ashish Siva · 1 year, 6 months ago

@Ashish Siva – Create your problems, post them and put a link here. – Mehul Arora · 1 year, 6 months ago

@Mehul Arora – Thanks – Ashish Siva · 1 year, 6 months ago

Here are my submissions for SHM

A tunnel so long

Easy SHM

Here is for coordinate geometry (Locus problem)

Conic problem

@Andrew Ellinor – Prakhar Bindal · 1 year, 6 months ago

@Prakhar Bindal – Thanks @Prakhar Bindal for the nice problems! – Sandeep Bhardwaj · 1 year, 6 months ago

Here's mine: Andlew's phuncsion .

EDIT: This too :) Andlew's phuncsion 2 – Nihar Mahajan · 1 year, 6 months ago

@Nihar Mahajan – Nice work on the accent tho. – Mehul Arora · 1 year, 6 months ago

@Nihar Mahajan – Thanks Nihar! – Sandeep Bhardwaj · 1 year, 6 months ago

My new challenging question on Geometry-Coordinate Plane has come: Bending a Triangle.

Can you bend this triangle? ;) – Worranat Pakornrat · 1 year, 6 months ago

@Worranat Pakornrat – Now THAT'S the kind of fun challenging coordgeo problem I've been looking for. Thanks! – Andrew Ellinor · 1 year, 6 months ago

@Andrew Ellinor – Thanks! More will come. ;) – Worranat Pakornrat · 1 year, 6 months ago

Here are my new entry on Geometry-Coordinate Plane: 1, 2, 3, 4, 5....

& Algebra-Functions: Fibonacci Reversed.

Have fun with the new party! – Worranat Pakornrat · 1 year, 6 months ago

@Worranat Pakornrat – Hey Dr. Warm! The Fibonacci Reversed question was kinda fun and I think it will go well in a level 2-3 quiz on functions.

The point-to-line distance formula is slightly overused though, so maybe there are some problems that are a little more fun. ;)

For instance, this problem uses the point-to-line distance but in an intriguing way: https://brilliant.org/problems/coupled-lines and this problem also stretches the brain a little bit: https://brilliant.org/problems/possible-right-triangles :) – Andrew Ellinor · 1 year, 6 months ago

@Andrew Ellinor – Thanks, Andrew. I'll surely come up with more challenging lines & points. ;) – Worranat Pakornrat · 1 year, 6 months ago

Demented Derivatives

Hello @Andrew Ellinor here is my submission ..... – Chinmay Sangawadekar · 1 year, 6 months ago

@Chinmay Sangawadekar – However, it is not a problem from the Party Listing topics, good problem though. Please check the topic listing for the party before submitting the problems for the party. Thanks! – Sandeep Bhardwaj · 1 year, 6 months ago

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Problem Writing Party: March 14 - March 27th

How it Works

Use this note to

-------->This Party's Topic Listing<--------

Comments

Master advanced concepts through explanations,
examples, and problems from the community.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.