Calvin Lin's messageboard -2
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Hi guys! You can leave messages for me here.
My previous messageboard has too many comments and images, which cause it to load slowly. As such, I have locked it, and started a new one
Note by
Calvin Lin
6 years, 5 months ago
1 vote
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:
*italics*or_italics_**bold**or__bold__paragraph 1
paragraph 2
[example link](https://brilliant.org)> This is a quote# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"\(...\)or\[...\]to ensure proper formatting.2 \times 32^{34}a_{i-1}\frac{2}{3}\sqrt{2}\sum_{i=1}^3\sin \theta\boxed{123}Comments
Wish you a very
w+ln∣N∣=ln∣∣ap2H+ear∣∣+ln∣y∣
Thanks for creating Brilliant.org, @Calvin Lin
The wiki section is a grt feature; after reading it I am very much excited to tackle higher level related problem appearing under 'community post'. Hoping to see more such features and expecting grt changes. Thanks again for Brillian.org.
Indeed, that is a newish feature that I am really excited about. I will make an announcement with further details shortly!
Update: Here's the post!
@Calvin Lin Thanks sir for making Brilliant, a Brilliant Website!
@Calvin Lin: waiting for the picture to get updated...
Patience my young padawan.
Likely tomorrow, else Monday. I was working from home on NYE so that I could organize a NYE party, and today is a holiday (so I'm not heading into the office).
Alright, updated!
Sorry, we have a busy week.
I can't imagine a single day without Brilliant. Thank you for creating such a brilliant tool !!!
Thanks! Congrats on clearing NSEC.
Tell your friends about us :)
Yeah sure ! Anything for you sir !
Sir can this feature - ask a question box be attached to the wikis , in case if we are unable to understand something or a thing that seems unlogical and that's to be changed
If you are referring to something that exists on the wiki page, then the best approach currently would be to post a note saying "I don't understand XXX on wiki YYY". It would be helpful to screenshot / copy-paste the relevant section that you have doubts on. This way, others will be able to clarify it and modify as necessary. We will be looking into different approaches in future.
If you are referring to wanting to clarify your doubts about the skill/technique/idea, then similarly you can post a note on it.
@Calvin Lin
Hi sir, Can you please devise a system by which we can get Notifications whenever someone @mentions us , here on Brilliant and not in our e-Mail account .
I'm asking this because I didn't check my mails today and it so happened that @Adarsh Kumar @mentioned me in a note of his to which I couldn't reach out to .
Please consider this request sir .
Thanks for the same :)
Thanks for the suggestion. We are still developing out he notifications system, and will add more functionality to it.
I'm glad I could help in making Brilliant an even better place :)
What do you have in the little cylindrical blue container to the left of your laptop? Carrots?
That's my chewable Vitamin C. I'm guilty of popping several a day,
I would still recommend carrots...
What is it with Brilliantians and carrots? Even @Krishna Ar was asking me the other day if I like carrots or not?
Uhm....its actually and Indirect reference to "a bunny" (Guess who? ..... :P ) P.S-(I guess this is what it is meant to be)
Lel... XD
Bunny? I guess Sreejato.
i hope brilliant will rejuvenate all the members in 2015 as well by interacting with interesting problems as earlier.HAPPY NEW YEAR !!.
Hi sir I have yet another suggestion for the Brilliant Team :)
Is it possible for you guys to upload Video Lectures on certain good topics ? Short ones will do ,though .
It's just a suggestion sir , though you might want to ask others about it . Me and @Andrei Golovanov just talked about it and the both of us like the idea so here I am suggesting it to you !!
Thanks for the same :)
Currently, I do not feel that video lectures would be a worthwhile investment of our time. Video lectures will require a lot of resources to implement, in order to get a level of polish and presentation that is equal to the wiki writeups. It is much easier for everyone to be able to explain in writing, as opposed to having to set up a video to record the lesson.
We would also then have to deal with those who have slow internet connects. Just imagine, if this list of text is taking you 2-3 minutes to load, how long would a short 5 min video take to load on your phone / desktop? That would likely make it a feature that most people will not engage with after they saw the first video.
Yeah , agreed , sir :)
Btw thanks for replying ,sir :)
Can u send me a link explaining newton sums please?
It makes me sad that the Newton's Identity Wiki is currently empty. It is definitely on my list of Wikis I would like to see written up. Let me make an appeal and see if some kind soul will help us out :)
I'm on it. I was about to ask the same thing earlier but he beat me to it! I think I can manage to explain it (although it'd be a great help if someone could tell me the outline of writing a wiki page, since it's much different than writing a solution to a single problem).
Don't worry about that, we will help to clean up the formatting and make it look good.
I think that the relevent sections will be - introduction to newton's identities and why we care about them - The quadratic / cubic equation case (which is easier to understand) - The general case - Examples of its use in typical settings.
Done. I haven't written the general form yet and I plan to do that within the week since I'd be a little busy with some school projects that I have to submit before 3rd Jan, i.e., tomorrow. :P
By the way, the example that I provided, I haven't checked if the answer came out correct or not. It'd be nice if you could check the answer and undo any arithmetical mistakes I may have made.
This is a great start! I made a few changes, and added some links to other wiki pages. I'm excited to see more when you are done with your school projects.
I verified that the answer is correct.
@Calvin Lin Sir, can I post a wiki on physics topics like light and electricity and make their quiz too.
You are certainly welcome to post a wiki on a new topic, by selecting "Post something - New Wiki". We do not allow members to create the quiz, as we want to maintain a standard of quality for the practice quizes. You can post problems directly though, which would be equally helpful to the community.
Calvin Lin Sir,I wanted to Ask If there Is A feature Of Multiple Answer Correct On Brilliant??
There are no plans for that feature, because it will be extremely complicated to explain and interact with, compared to the simple MCQ version that we currently have.
Given that MCQ questions now allow for 8 options, you could recreate something like that for 3 statements, and the ask "which of these statments are true", with 8=23 options listing out all the various possibilities. If see that many people actively want to do this, then we will reconsider having such a complicated system.
Sir sorry but I did'nt liked this avatar of brilliant
Reasons-
Very cozy and compact look
Unable to distinguish between a question and a note
Feeling like working at office
Previous brilliant was better.
The format of displaying is not good.
Thank you. Hoping previous one comes fast.
Agreed, the Community page looks very dull and I also agree with your 2nd point .
I liked idea of selecting levels on the Community page,but There are no marks on which question is solved by me or not.
If you look carefully you'll find that the title of the questions you haven't solved appear bolder(black) while titles of those you have solved are fainter(greyish) .
I saw That But Previous one was better
@Vraj Mehta @Azhaghu Roopesh M Yes we are aware that the current situation is not ideal. As mentioned in my reply,
Thanks for the feedback!
It certainly isn't great that you feel like you are working at an office, and that is not the intention at all.
We are working on making it clearer if you solved a problem or not. Right now, the only difference is that the title is not in bold.
Sir take it ligthly as you and your team is constantly working hard to improve each and every section of brilliant community . Put me in a category of a critic . This critic only has a suggestion that the previous brilliant format was good comparative to the present.
Thanks. A great site
With regards to "Feeling like working at office", does adding images to the problem display help improve that?
(Image removed)
Yes definitely , now feeling like sitting on previous Brilliant.org. Thanks , for taking it seriously.
Sir, I would like to know why isnt there any point grading system for Chemistry problems?? is it possible to have it there also?? if so how?
There are currently no plans for a point grading system for Chemistry of Biology problems as yet. Though, things may change!
What is a good way to get started with quantitative finance?
As with any other (developed) topic on the site:
1) Start off by trying problems that are Level 2-3.
If you can (comfortably) solve them, then that indicates that you should know most of the basics of the topic / chapter. The higher level questions in that topic / chapter will likely involve deeper theory, more in-depth problem solving skills, or a combination of knowledge across different skills.
If you are unable to solve them, then that indicates that you should work on the basics of the material. Start by going to the (Quantitative Finance) Skill Map, and read up the various wikis. Ensure that you can do the Level 1-3 problems attached at the end (I'm working on adding problems across all of the wikis, so bear with me) as a way to test your understanding. After that, look at the Level 4-5 problems and see if you can apply what you have learnt.
2) Review the material after you have done a problem
Even if you have successfully answered a question, look at the solutions and see if there are ways to improve how you approach the problem. Especially if you had a difficult time answering the question, see how others were thinking about it.
If there are no solutions, add your own, and I will give you feedback.
For example, in Quick Bond Calculation, the idea is that if we know the coupon rate = discount/interest rate, then we immediately know the price, because the coupons perfectly compensate for the lost time value. There is no use a spreadsheet, or the standard formulas, to calculate the price in this scenario.
3) Come up with a system to properly file and understand what you have learnt.
There are several different takeaways from each problem, and everyone would have their own interpretation. Take what you consider important, and see how it fits into your current understanding of the topic. If it does not fit well, then spend some time pondering about it and see it's relevance.
Note that not every piece of information is (immediately) useful and/or relevant.
Thanks, that will be helpful
Can we Improve features in disputing Box ? I mean when we dispute to a problem then it does not notify to problem creator in his notification's chart , and also when someone add comment's in disput box then it doesn't notify directly in notification's box . May be I'am wrong , but i think currently we don't have such feature . Am I right ? I feel great if we can make such feature . Thank's Sir! @Calvin Lin
We are working on improving the reporting feature.
Currently, the problem creator will receive an email when there is a report. Any comments in the discussions will also result in an email to all the relevant parties.
We will be adding notifications to it once the feature is stabilized.
Sir, can you please help me by suggesting some material for studying(except the brilliant wikis, of course). I am interested in learning math to its depths. Thank you.
I expect the Brilliant wikis to quickly become the best place to learn about math in depth. Not only will it have detailed explanations of the concepts along with worked examples, there will also be relevant problems for you to try and improve your ability.
Given the contributions by the community in the past 3 months, I am excited for what 2015 will bring :)
Why a laptop and a desktop both at a time?
Is the pen's company brand- Uniball
I 'm not as informative as sir about the sources but according to me khan academy is the best place to learn and practice problems there itself...And also you can just sign in udacity to learn about some programming skills . So, in my opinion these places are good enough for a beginner as well as for an intermediate . And also brilliant wikis are cool..
I have already signed in to Khan academy. Thanks and please tell of any more sources you know
How do you latex a "therefore" symbol because I can't find it on the Wiki Formatting guide ?
∴
If you see an equation in LaTeX, you can hover over the image to see the corresponding code.
\therefore
where do u live presently ??
San Francisco, which is where the Brilliant office is based. Most of us are in San Fran.
cool....
I just remembered something that I wanted to ask you since a long time. Actually, I was wondering how would one apply to work for Brilliant as a staff member? Is there any other forum or website from where one would apply for the job.
If you look at our about page, you will see a list of job openings. You can also simply send me your resume, and I will forward it along.
Well, I'm only 16 at the moment, so... :P But, I was thinking of applying after I finish my studies.
Right, the same will (most likely) apply then. You can go to our about page, which will have a link to the jobs page. This is generally true of most companies (or at least those that have open positions).
Alternatively, you can send me your resume and cover letter, and I will forward it on accordingly.
Ok, thanks for your time. :)
Sir , when we edit a wiki does our name come in the contributors
We display the "Top 3 editors" of a wiki. The order depends on the quantity and quality of the edit.
If 3 names have already been displayed, then making 1 edit to change a typo is unlikely to get your name on.
Slight caveat: To encourage submissions from the community, staff contributors (if any) are listed at the end.
I am giving the proof of the fundamental theorem of calculus in the wiki will my name be displayed
Given that there are currently only 2 names on it, if you make an improvement, then your name will appear as one of the "(Top 3) Contributors".
I have edited the Wiki check out the new edited wiki
Thanks!.
Note that when typing in LaTeX, you need only place brackets around the equations, instead of the entire chunk of text. This allows plain text to be displayed normally, instead of being italicised with forced spacing. We can type equations in line like x+2=6, or on their own line like so:
x2+y2=z2
You can hover over with your mouse to see the LaTeX that produces these equations.
Sir till now I am not able to solve this problem
17 solvers but no solutions , can you and the solvers please provide me any hint ?
Looks like a standard 3-D coordiante-ish geometry problem.
There are 2 planes that the 3 circles are tangential to. Along with the 3 planes containing the 3 circles, we obtain a equilateral base frustum in which each side is tilted at 45∘ to the base. Complete the frustum to a pyramid, and find the dimensions of the triangular face. It has an incircle of radius 10, and we can then calculate the distance between the 2 points of tangency.
Sir, I am making a wiki on logarithm please tell me how to add existing community posts.
You are only able to edit your own posts/problems. To do so, at the "dot dot dot" menu in the lower right, select "edit problem", and then select the corresponding topic/subtopic/chapter/skill.
You are not allowed to edit other people's posts/problems.
@Calvin Lin i wanted to know how to add already made posts to wiki
As stated above, you are only able to edit your own posts/problems.
To edit a problem, select the "dot dot dot" menu in the lower right, select "edit problem", and then select the corresponding topic/subtopic/chapter/skill.
To edit a note, select "Edit this note", and then select the corresponding topic/subtopic/chapter/skill.
Hi Calvin I wanted to know how one develops his intuition on these kind of problems
https://brilliant.org/problems/add-a-reciprocal-repeat/?group=SXpuCqeOEN5w&ref_id=558110
I mean how do we know how to bound certain functions etc... any tips,books?
Thanks
Practice and exposure to such problems would help you come up with different ways of approaching it. I see that the problem is placed in Induction - Inequalities, so working through those problems will help you improve this specific skill. Currently there isn't a lot of material on that page, but over time that will change.
Hi Cavlin sir i want to know. What are the requirements to become a moderator?
Moderators help to improve the experience on Brilliant, by doing things like improving problems, actively promoting problems which they think others should see, removing trashy comments written by trolls, etc.
Candidates are selected based on their behavior in the community. They should be active exemplary members who are helpful in their interactions with others. An example of such an action is to contribute solutions and then engage with those who have questions and help them to clarify.
Thanks sir. Now i got my next target.
Truly said - Murlasin habib and Agnishom Chattopadhay are making my experience on Brilliant unforgettable
hello people i have recently woken up to the fact that Brilliant is an excellent place for enriching problem solving skills but i have found myself stumped by the difficulty of the higher level problems any ideas to facilitate my improvement would be much appreciated
Check out the wikis! They are a work in progress, but there are several great articles that will help you improve your problems solving skills!
Thankyou Sir
Calvin Lin sir,I've got a suggestion.I think that whenever Brilliant users search for problems on the search menu,it should be written ''Incorrect,Not answered,Correct''etc besides a problem they have either got wrong,haven't answered or have got right.Like it is written besides the problems on the community page.Please reply
Thanks! That is a good idea. We will take that into consideration when we improve the search functionality :)
Sir can I take print out of some notes and wikis?
Just curious - Why a laptop and a desktop simultaneously?
Certainly, you are free to print out notes and wikis. If you are sharing it with others, I would appreciate if you tell them that it's from Brilliant.org, as I'm sure they would be excited to find out more.
I mainly use a laptop for the convenience of it. The desktop screen provides me with much more screen space to work with. Screen real estate is really important, I had even considered using 2 huge screens to avoid toggling back and forth. For example, I often have 10 tabs open in each browser window that I use, because I need to manage data across a wide variety of tasks.
Thanks for sharing , moreover I have uploaded some problems of anastisya romonovia , sandeep bhardwaj etc with the tag brilliant.org on my gmail account , so my more friends come - but only 3 have arrived.
I tried to copy the text to take a print out but latex is not copied . Please help
Latex equations are displayed as an image, as that allows it to quickly load on a page.
The easiest approach would be to print the page directly.
Alternatively, you can print screen the relevant portions and compile them into a document.
If you want a word for word copy, you can save the images and use them where missing.
Maybe you could share the problem via facebook or take a screen shot.
@Krishna Sharma As your comment about the bug wasn't on topic with the note, I am moving the discussion here.
Can you report the problem, stating "I answered correctly, but you marked me wrong", and provide the screenshot? That will help us troubleshoot what is happening. Thanks!
Initially I answered 'none of these' but was marked wrong, later after reporting I got a mail that 'your answer was correct even though we marked you wrong....' when I clicked to the problem link then you know what happened(screenshot).
Thanks for clearing that up.
Yes, we are aware that when we fix answers, there can be display issues like what you saw, where you get a (cached) banner of "Nice try ....", while we display that you chose the correct MCQ answer / real number answer. That is why we generate the email as the confirmation that the answer has indeed been updated correctly.
Hey calvin Srry for being rude. Thanks for removing the dispute box.
No worries, I understand where you are coming from. As the creator of the question, you believe that your problem is correctly stated, and is crystal clear to you. However, I have to play devil's advocate, and take the view of the common person who sees your problem and fails to understand what you want because they are not a mind reader.
Your problem is now greatly improved, and those who come across it will be able to solve it or understand your solution, instead of just thinking that you are wrong and ignoring it.
I'm looking forward to seeing you post more problems, and improve over time!
Sir, I posted a problem named "Lines and Triangles Living together", only 5% were able to solve it. But it was given level 2. Can you plz update its level ?
That's because only 20 people have looked at the problem, and few were interested in answering it. Look at improving the phrasing of the problem to making it easier to understand and more interesting to work on.
Thank you, Sir for your advice. I have another problem Sir. It's been almost two weeks since I posted a problem named "Lucky Bird Hunter", and it has not been given any level yet.
Sir, its almost 15 days, since I posted my problem "Lucky Bird Hunter", but whenever I open it, its level says "Level Pending". Can u plz check Sir
As explained before
@Sandeep Bhardwaj @Calvin Lin @Steven Zheng @megh choksi. sir please tell me books to practise JEE Advance and Main physics,Maths with good questions. Theory less but problems more. Please help
For Physics, first the concepts must be completely clear. In other subjects, one can solve problems only if the concept is clear. But in Physics, Concepts are clear, if the problems can be solved. One Book that I recommend (I had also used at your age), is HC VERMA and IE IRODOV. Then Shri Balaji Publications' Anurag Mishra is very useful, once the above mentioned books are solved.(Don't try this book before those mentioned above). For Maths, Arihant Publications are the best. Best Of Luck.
I am able to tell this because I also used these books and qualified JEE Advanced at the age of 15.
I have finished HC verma. Do you know any more books.
You gave the JEE exam at a younger age.How?Are you in IIT?
If you have solved HC Verma, well and good. People say DC Pandey of Arihant Publications is also a very good book but I personally haven't solved it. Yes, I am studying in IIT Kanpur. I got AIR 2542 in IIT JEE 2012.
I have finished DC pandey as well
By the way Nice rank for giving IIT at a younger age
Thank you.
You must try IE IRODOV as well.
Congratulations! How did you started learning physics?
Sir do you know any books for Physics and Maths
Please don't call me sir. Not good at physics.
Books I am having,
Amit.M.Agarwal - Playing with graphs(fun to solve)
Amit.M.Agarwal - Calculas
Mathematical Circles - Dmitri Fomin( you are now just 13 so please do this first , don't do with a competitive mind, solve with interest, it will definitely help you)
MTG magazine(Mathematics today)
Brilliant tutorials postal guidance course
physics only have H.C Verma and NCERT textbooks.
Now as you have solved H.C Verma at age of 13 , so now do organic chemistry (I think you will able to do) , if you are used to it now at age of 16 you will find yourself at college level in chemistry.
Brilliant.org , problemsolvers.club(recently I found) proofathon.org and JOMO.
Highly recommended
Don't develop a competitive environment right now(for jee) just enjoy solving and learning , but do have a competitive mind for olympiads. See this video
and don't forget to ask deepanshu gupta , agnishom chattophadyay and Murlasin habib
sir please tell me books to practise JEE Advance and Main physics,Maths with good questions. Theory less but problems more. Please help Please tell me the books you use @Deepanshu Gupta @Agnishom Chattopadhyay @Mursalin Habib
Hi megh choksi , can you give some advice for studying Physics for JEE since I'm quite weak at it ? Please don't suggest any books since I have quite a lot of them , DC Pandey(complete series) , HC Verma , materials from my coaching class IIT Ashram and yeah of course Irodov too .
Thanks for the same .
Irodov is a good one...
Which class are you in?
9th.
You meant going to 9th in April or going to 10th in April.
Sorry for confusion.
going to 10th.
@megh choksi Please tell me from where did you get Mathematical Circles - Dmitri Fomin
Flipkart
Infibeam
Amazon
or want to see the whole book in your desktop before buying
Try my new problems as they involve more than one concept. "CAN WE REACH ESCAPE VELOCITY" "HANGING SHM" "NO NAME FOR THIS PROBLEM"
@megh choksi Please could you tell me whether Mathematical circles has many questions of geometry related to circles .Are they challenging
No basic level.
you meant there is no basic level or 'they are basic'
No for challenging one's , I have provided the link for mathematical circles too , have'nt seen yet?
Do you know any challenging book?
Thanks,anyways
Well , problem solving strategies by arthur engel is a good one..
Do you any good book for class 9th and 10th geometry - tough problems?
For number theory - elementary number theory by david burton.
Mathematical circles make your basic principles very strong.
All rounder - problem solving strategies by arthur engel , the art and craft of problem solving by paul , challenge and thrill of precollege mathematics.
Physics- I prefer H C Verma , Irodov
Chemistry - Viraf Dalal
You must try IE IRODOV as well
Try my new problems as they involve more than one concept.
"CAN WE REACH ESCAPE VELOCITY" "HANGING SHM" "NO NAME FOR THIS PROBLEM"
You can also try my problem on BRILLIANT, "CAN WE REACH ESCAPE VELOCITY" to check your concepts in Mechanics. You should try to solve Deepanshu Gupta's questions on brilliant.
@Thato Mthethwa Hi Thato, you piqued my curiosity. Are you organizing a mini contest for your "Math seminar" friends? If so, I would like to hear more about it!
Yes, but it's just a fun activity only for my class mates.
That's exciting! Do you (and your classmates) enjoy your experience on Brilliant?
Sir you don't need to ask that question at all? In fact, there's no one here on Brilliant who doesn't like it here . Also I recommended Brilliant to some of my friends Rajat Bhagat,Punit Kalariya,Naitik Choksi,Purvik Kalariya,Manoj Madigeri and Yash Gattani and they all joined (but aren't currently active due to our Board Exams and JEE Prep) but they all enjoyed it here and will be back soon once our exams are over .
Thanks for making Brilliant such a wonderful and interactive place Calvin Lin ,Suyeon Khim ,Peter Taylor , Arron Kau and other staff(sorry if I missed out on a few) .
Punit kalariya and Purvik Kalariya till class 10 studied with me
Yeah, they told me about you and vraj mehta.
@Calvin Lin Oh, so you also use a mac.
Sir i have created a Wiki but i am not able to enter a table via latex or either upload an image in its place.. can you please help me with it, the image is below:
Wiki Topic : Chebyshev's Formula
Image Link: Image
Thanks! It looks like an interesting read :)
The easiest way to upload an image to wiki, is to "Edit this page" and then "Upload an Image" button to upload any image files that you have.
This way, you do not need to check what url you are linking to.
yes I have tried it but it is saying that brilliant is facing a problem connecting to its servers
Hm, I will look into the "problem connecting to its servers". I believe that the issue is that the file which you're trying to upload is too huge. Try reducing the size / resolution of it.
Alternatively, it could be the format of your file. Do you know format it is in? We currently only accept png, jpg, gif, and tell you that other file formats are not accepted.
In the meantime, I have uploaded the image for you and placed it at the bottom of the page. You can move it accordingly.
Note that we do not allow for "Latex usepackage" or the "tabular environment". You can use the array environment to create tables. For example:
1a2b3c
If you are unsure how, just leave the image up, and we will convert it into Latex.
ohk thanks a lot for your help sir...
Hi Harsh, check out your wiki now and tell me if there's any change to be made .
ya it has been made and thanks a lot bro...
Hi sir, I've posted a wiki on Gamma Function . I understand that it is very short but I don't have much time to completely fill it up .I'll do it sooner or later but it is a good topic that everyone must know about, so can you ask some of the moderators to fill it up . I've added the most basic and important points regarding Gamma Function , so the wiki is currently lagging in some Examples and some Community posts only .
Thanks for the same .
Thanks!
Do you guys know any book for Geometry. Please help????
Sir thanks for creating brilliant I have a suggestion of adding chat column so that we can chat to followers and other people
You're welcome!
Thanks for the suggestion. We will consider adding chat.
Sir you can add all the wikis on the homepage so every new comer can know about thanks for considering my suggestion and creating brilliant
Thanks! We are planning on adding Wikis to the community tab.
Is there a page or a way to look up/post proofs to solve?
You could post it as a note.
We currently do not have problems that are posed as proof-based as yet. I would love to be able to have that, and we will be working towards that!
Ankit, as mentioned previously, the only possible values of n are 1 and 2. Please stop reposting wrong problems.
Please check that you are receiving emails from us about reports on your problem. If not, please confirm your email address.
@Ankit Jain
Hi @Calvin Lin sir, I have a suggestion . How about adding a sound option to notifications ? Since many a time I have faced this problem while I am busy solving a problem and then a notification comes but then I am not able to notice it on time .
It would be better if there would a least be a beep ! sound along with the notifications so that we may know that we got a message from our friends .
Just a suggestion, Please think about it sir !!
Thanks in advance sir .
Thanks for the suggestion. I will forward that along.
@Calvin Lin Sir, How to become a moderator? Cause I want to become one.
See my reply to Rajat Bisht
Calvin, what's the policy on citing references found on the internet? As an example, in this problem
Interesting formula from combinatorics
I would have liked to cite the paper that has the integral that leads to one proof of the identity. There's a wealth of information that can be cited on the internet. Is there a Brilliant posted guidelines about that? If there isn't, maybe there should be one?
By "cite", I mean to provide the link.
We do not have a policy on how to cite papers.
If you simply link directly to it, that would be fine.
If you want to reproduce significant parts of it (e.g. screenshots), please state where you obtained it from, and also provide a link to the article where possible.
Ah, okay, then I'll feel free to post any relevant links in my answers. Now, but I think there is some of a policy when posting wiki pages, but I think I can look that one up. By the way, nice answer to that "Interesting formula from combinatorics", I don't think I would have found that approach myself. Combinatorics is not my strong suit.
We do not yet have a policy for posting wiki pages on our site. We are working on ways to make it easier to link to a wiki page, instead of having to look it up and then use the markdown link. This will likely take a while before we release it though. As always, when posting content to another site, we would appreciate a link back to the relevant piece of content.
Yes, that particular question seemed like a strong candidate for generating functions, due to the convolution on the left, and the simplicity of the function on the right. Technically, it should always work, but the hard part is hunting down the specific generating function to use and then manipulate.
I have answered a few questions of quantitative finance (beta) section... Why isn't my profile showing my level in quantitative finance section??
As with any new topic, you need to do several problems, before your level is determined. Keep on answering problems.
Following up on this, I see that you have obtained a level, and it is now displayed in your profile.
yep...Thnx for your help
Sir,sometimes whenever I try to post solutions,when I press the ''publish'' button,it instead deletes my solution.Please fix this because I have wanted to write a solution to a problem but this bug prevents me from doing so.
P.S:I don't know if this is connected to the bug or not, but it always seems to happen when I am writing the first solution to a given problem.
EDIT:I just took a look at the aforementioned problem,and the solution's there!
Hm, this is the first time I'm hearing about this issue.
To check, after you click preview, did you remember to click "publish"?
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If it happens again, can you please link me to the problem, and I would be able to take a look from there.
Yes sir, the problem occured with me too.When I click on publish,my solution gets deleted and it says "no solutions have been posted yet......".But when I revisited my solution next day it was present there.
@Calvin Lin Who spots me helping people. And would make me a moderator
I select moderators as and when needed.
There is no way to guarantee that you will be selected.
@Abdou Abdou Your problems were deleted because they were non-sensical / not well explained what you were asking for.
For example, in consecutive standing, you said "3 numbers from your mind", but offered the options of "O-O-O" and "X-X-X".
In the impossible puzzle, you asked for multiple questions like "What are the two chosen numbers ?" and "What would be the the third guy's conclusion if this conversation took place from the fifth line instead ?", but gave an answer of 0.
As such, your problems have been deleted. You can refer to the reports to help you improve your posts.
Sir, I would like to know why isnt there any point as well as level grading system for Chemistry problems?? is it possible to have it there also?? if so how?
Hi sir, here's the link to a wiki by my friend Kishlaya to which I had decided to add a proof , but later on I realized that that the proof had an error so I deleted the proof . But still my Profile Pic appears in the wiki contributors list , which shouldn't be there since I haven't contributed to the wiki(as of yet ) .
Can you remove my name(i.e. the pic) from that list ,sir?
Thanks sir .
sir,I want to contribute to differential equation variable separable wiki but finding difficult to write,format,understand the body of the wiki.Please help me with these basics.
Just open post a new wiki (It already has some basic syntax) and click preview. You'll know what code does what.
Don't worry if you are unfamiliar with the syntax. We can help to clear it up. Just start typing away, so that the community can benefit from your contributions!
Ok thanks I'm going to write one.
Check the problem I disputed
I generally give the problem creator 1-2 days to respond, before I actively take any action. I would prefer for the problem creator to fix the issue, instead of having me to step in every single time and do some long-distance mind reading.
If moderators are going to change the wording of my problems, I should atleast get notified. It irritates me to see that some of the moderators edit my problem and in doing so erase some vital data that the problem had. For example, my latest problem Can we save Agnish? was modified by someone and that person erased the main data that the person solving the problem would need, i.e., the damage values and mass of Agnish. Also, the info that only 3 shots were fired was removed. I had to edit it once again. If I hadn't seen it in time, a good problem would've been reported by several members.
If nothing else, they can atleast leave a comment in my messageboard notifying me of the changes they make on my problems. I don't write much problems and things like this demotivates me from writing more.
I want to add that moderators aren't supposed to heavily edit problems. Their editing privileges are supposed to be used to improve formatting or making minor edits.
If a problem requires heavy editing, we are supposed to report the problem and ask the problem creator for further clarification.
So whoever edited your problem wasn't following the moderator guidelines.
We were in the midst of modifying the problem as it could be deemed as a personal attack,
I have deleted the problem. Please do not make personal targets of individuals. It also does not help that your profile pic depicts a troll.
By any chance was that Agnish guy me?
Maybe. Maybe not. :P
It wasn't any form of attack whatsoever. It was just a humorous problem which didn't indicate anyone in particular. You deleting my problem makes me sad. :(
Repost it, where you are not killing out a particular person for whatever reason. Use a more generic name :)
Don't be sad. Here's a cookie for you
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:D
Just Asking
May I know how many day streak are you in? Pleassssss!!!!! Reply
I have replied to this post in my Messageboard -3
Hi! A couple of days ago, when I was solving number theory problems on here, my ratings went up to level "3" three times! Just now, my ratings went up to "3" again! Do you know what's going on? Thank you!
Your ratings fluctuate as you solve / fail to solve problems in each topic. To find out your ratings, check the stats page.
Sir, so you are saying that I can go from Level 5 to Level 3 !!!
Yes of course. Your abilities can, and will, change over time.
No sir, what I was asking was that If I don't answer Level 5 questions and solve only level 2,3 questions OR if stay away from Brilliant(I'll try my best not to !!!) will my ratings (and hence my Level in the various topics) change ?
Thanks for the same sir
No, I did not say that, nor imply that at all. I said that it is possible for you to go from level 5 to level 3, but I did not specify how.
If you constantly answer problem incorrectly, then your level will drop over time.
If as a level 5, you only answer level 2, 3 questions, but you do so correctly each time, then your rating will not decrease. It will likely not increase by much either.
If, as a level 5, you constantly answer level 2, 3 questions incorrectly, then yes your ratings will decrease, as it indicates to us that you are having difficulty with some basic material.
If you stay away from Brilliant, you ratings (currently) will not decrease.
Thank you very much sir and sorry for being the nuisance I have been (for you) lately .
Ok, thank you.
hello sir can you please give levels to some of my questions:
https://brilliant.org/problems/balls-balls-everywhere/?group=I4qInUtzNRvW
https://brilliant.org/problems/a-geometry-problem-by-harshvardhan-mehta/
https://brilliant.org/problems/a-combinatorics-problem-by-harshvardhan-mehta/
https://brilliant.org/problems/area-between-curves-2/
https://brilliant.org/problems/balls-balls-everywhere/
https://brilliant.org/problems/what-exactly-it-is/
https://brilliant.org/problems/solve-it-if-you-can-8/
https://brilliant.org/problems/number-tumble/
You can see that all of the problems say "Level pending (100 points)". What that indicates is that we are still trying to determine the level of the problem, and have not had sufficient information as yet to do so. I've shared 2 of your problems, which should help give it a boost.
well thanks a lot for it..
Hi sir, can you tell me when is Brilliant's birthday ? Always wanted to ask you this , just kept on forgetting !!
@Calvin Lin Please reply sir, since I'm very much interested in knowing it !!!
Calvin Lin Sir My 2 questions have not been given a level they are
1.Vel-displace-accel-problem
2.integration-mannia
That's because very few people have looked at the problem, and fewer were interested in answering them. Look at improving the phrasing of the problem to making it easier to understand and more interesting to work on.
Sir My 1 questions have not been given a level they are Click Here
As mentioned
Does anyone know any website where we can get good problems on chemistry or physics?