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Problem Writing Party: March 14 - March 27th

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

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

  1. Ask questions about the party or brainstorming ideas from Brilliant staff.

  2. Share links to great relevant problems.

  3. 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!

Note by Andrew Ellinor
6 months, 2 weeks ago

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

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

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

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

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Welcome to my mysterious function problem: The Hidden Function.

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

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@Félix De Montemar Nice set of questions ;) 展豪 張 · 6 months, 1 week ago

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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 · 6 months, 1 week ago

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

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

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

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 · 6 months, 1 week ago

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

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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 · 6 months, 1 week ago

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

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@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 · 6 months, 1 week ago

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

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

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@Aditya 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 · 6 months, 1 week ago

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

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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 · 6 months, 2 weeks ago

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@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 · 6 months, 2 weeks ago

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@Andrew Ellinor I Will Post some cool coordinate and SHM Problems By Tomorrow Prakhar Bindal · 6 months, 2 weeks ago

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@Andrew Ellinor sorry for wrong submission! i'll keep it in mind and soon put up some problems Neelesh Vij · 6 months, 2 weeks ago

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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 · 6 months ago

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@Pranshu Gaba Thanks Pranshu! :) Sandeep Bhardwaj · 6 months ago

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

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

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

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

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

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@Sandeep Bhardwaj Lol...;) Worranat Pakornrat · 6 months ago

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

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

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Here is my submission on functions. Svatejas Shivakumar · 6 months, 1 week ago

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@Svatejas Shivakumar Thanks @Svatejas Shivakumar for the nice problem! Sandeep Bhardwaj · 6 months ago

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

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

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@Worranat Pakornrat Great one! Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj Thanks! ;) Worranat Pakornrat · 6 months ago

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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 · 6 months, 1 week ago

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@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 · 6 months, 1 week ago

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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@Anish Harsha Thanks Anish! Sandeep Bhardwaj · 6 months ago

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

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

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@Adwait Godbole Thanks @Adwait Godbole for your contribution!

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

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

  1. A really small change
Adwait Godbole · 6 months, 1 week ago

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@Adwait Godbole Thanks! :) Sandeep Bhardwaj · 6 months ago

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

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

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Here's mine for Functions

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

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@Mayank Singh Thanks @Mayank Singh :) Sandeep Bhardwaj · 6 months ago

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

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@展豪 張 Thanks for all of your cool problems. :) Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj Thanks for trying all of them :) 展豪 張 · 6 months ago

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@展豪 張 Another entry:
Coordinate Geometry 展豪 張 · 6 months, 1 week ago

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@展豪 張 Another entry:
Functional Equation(functions) 展豪 張 · 6 months, 1 week ago

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

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

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

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

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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 · 6 months, 1 week ago

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

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Here's mine

Cool 3-D problem

3-D Coordinate geometry

One more 3-D problem

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

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@Akshay Sharma Cool problems! Thanks @Akshay Sharma Sandeep Bhardwaj · 6 months ago

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Calculus of parametric eqns.

Hobart Pao · 6 months, 1 week ago

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

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Here is my entry for Coordinate Geometry:

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

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@Soumava Pal Thanks @Soumava Pal for your contribution! Sandeep Bhardwaj · 6 months ago

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@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 · 6 months ago

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@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 · 6 months ago

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@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 · 6 months ago

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

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@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 · 6 months ago

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

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

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

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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 · 6 months, 2 weeks ago

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@Prakhar Bindal Thanks @Prakhar Bindal for the nice problems! Sandeep Bhardwaj · 6 months ago

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Here's mine: Andlew's phuncsion .

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

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

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@Nihar Mahajan Thanks Nihar! Sandeep Bhardwaj · 6 months ago

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

Can you bend this triangle? ;) Worranat Pakornrat · 6 months, 2 weeks ago

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

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

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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 · 6 months, 2 weeks ago

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@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 · 6 months, 2 weeks ago

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@Andrew Ellinor Thanks, Andrew. I'll surely come up with more challenging lines & points. ;) Worranat Pakornrat · 6 months, 2 weeks ago

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Demented Derivatives

Hello @Andrew Ellinor here is my submission ..... Chinmay Sangawadekar · 6 months, 2 weeks ago

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@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 · 6 months ago

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