Welcome to RadMaths! We will update popular maths problems and discussions to help you learn, think more and advance in Maths.
Physics to be included in MadPhysics :)
list of 1000 primes - FOR NORMAL USERS
list of primes to a million(78498 primes) - FOR CODERS
COURSES:
Calculus
LATE EVENTS:
approximating a slice of pi
simplifying trigonometric values into (nested) radicals
Problems:
- Alice Smith
1. SAT 1000 series
2. Luogu series
3. reach the summit series
4. Integration Grandmaster series
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
- Zakir Husain
1. Pre-RMO questions
2. The e-day quiz
- Jeff Giff
1. Dr Fiendish series
1,2,3,4
- Aryan Sanghi
1. When two lines meet series
2. Coordinate geometry series
- Valentin Duringer
1. Dynamic Geometry series
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43-sequel to 42,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60
Discussions:
- Zakir Husain
1. On area percentage series
1,2,3-bonus
2. Math also fails series
1,2
3. Recurring decimals
- Yajat Shamji
1.Recurring proof notes
See Recurring decimals.
2. Number spy challenges
1,2
- Gandoff Tan
- Vinayak Srivastava
1. 10 PRMO sample questions-discussion
2.PRMO discussion
- Páll Márton (A Former Brilliant Member)
1. Proof chain
- Jeff Giff
1. Bilingual geometry note
- Inquisitor Math
1. A function whose reciprocal is an inverse
Formatting:
- Brilliant
1. formatting guides
- Percy Jackson
1. formatting guides
- Daniel Liu
1. formatting guides
- Hamza Anushath (Frisk Dreemurr)
1. formatting guides
- Páll Márton (A Former Brilliant Member) THIS IS THE BEST. SAVE IT NOW.
1. formatting guides
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:
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[example link](https://brilliant.org)
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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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Top NewestQuiz
@Vinayak Srivastava @Mahdi Raza @Percy Jackson @Jeff Giff @Aryan Sanghi @Yajat Shamji
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It doesn't work.
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But it is working in my PC Right now!
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Nice and very simple quiz
10/10 for the interesting thought for making the question
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Ah but I can’t access it in mainland China :P
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e
A new one!
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Now it started! @Vinayak Srivastava @Mahdi Raza @Frisk Dreemurr @Aryan Sanghi @Yajat Shamji @Siddharth Chakravarty
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bn+1=bn(a1−n) =bn−1(a1−(n−1))(a1−n) =(a1−n)(a1−(n−1))...(a1−1)a1=k=0∏n(a1−k) ⇒bn+1=k=0∏n(a1−k) ∴bn=k=0∏n−1(a1−k) ⇒bnan=ank=0∏n−1(a1−k) =k=0∏n−1a(a1−k) =k=0∏n−1(1−ak) ∴a→0limbnan=a→0limk=0∏n−1(1−ak) =k=0∏n−1a→0lim(1−ak)=k=0∏n−11=1 ∴a→0limbnan=1 ∴a→0limn!bnan=n!1 a→0limn=0∑∞n!bnan=n=0∑∞a→0limn!bnan =n=0∑∞n!1=e
Solution of second last one (with standard notations) :Log in to reply
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Could any of you make this a quiz or problem set on brilliant? Thanks!
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Sure
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@Jeff Giff - You can use buttons in RadMaths to make it more rad. See my note Buttons to learn button formatting :)
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I used it in anther note :) I don’t think it is necessary to add buttons here :)
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Nice, @Jeff Giff
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What about my Recurring Proof Notes? You think they are useful to your note, @Jeff Giff?
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@Jeff Giff- Try my A Pre-RMO question! series, Math also Fails! series.
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That's a definite one for @Jeff Giff to try - the Pre-RMO questions.
Also, RMO stands for...?
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By the way, try this for Math Also Fails - eiπ=−1,(eπ)i=−1, then i=logeπ−1?!
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No actually, definition of log clearly states that logab is defined only when
a>0anda=1
b>0
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Well it is correct, and not surprising if you know the Taylor series of ln and this
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If you want a big and detailed explanation you can ask for that (can even write a note!)
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Oops.. that’s logarithm for negative numbers :/
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Good idea! I’ll add them :)
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@Jeff Giff, Thanks for the mention for my LATEX Guide but, it is a work in progress and I can suggest you better ones - Daniel Liu's Guide and Hamza Anushath's Guide.
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Ok! Thanks!
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Thanks for the mention of Mathathon 2020 too!
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And please add mine too @Jeff Giff (I am Hamza Anushath)
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@Hamza Anushath - He still didn't add your Latex note, LOL
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@Percy Jackson @Jeff Giff
Yeah, it has been two weeksLog in to reply
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@Hamza Anushath
Mathathon started, start posting solutionsLog in to reply
@Percy Jackson
Yeah, if I post solutions for past questions, will I still get pointsDeduct five points from the total due to late submission if you'd like as well
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@Percy Jackson...
Cuz I didn't see the Mathathon problems till just nowLog in to reply
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@Percy Jackson!
ThnxLog in to reply
Try my When two lines meet series, it is a series of hard questions for learning to solve questions using graph. Is this useful for your note?
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@Jeff Giff Add this sreies also, of @Aryan Sanghi
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Thanks a lot @Zakir Husain
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@Jeff Giff for adding this in the note
Thanks toLog in to reply
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@Jeff Giff Also try to add polyfon series by @Aryan Sanghi
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Yes,thanku. I'll try to make the polyfun series more vast by adding more problems to it.
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@Jeff Giff- Kindly mention this note instead of my feed for Pre-RMO question series.
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👌 OK!
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@Jeff Giff, could you add my note too as a LATEX guide, it has many new facts and features which may only have been mentioned by me
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Click the add my note to access my note @Jeff Giff
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@Jeff Giff, if you need anything from me, check out my profile and choose the series (i.e. if you choose one problem, you have to have the rest of the problems with that title.)
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@Jeff Giff - Kindly add this in RedMaths ''Late Events''
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@Jeff Giff Thanks!
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Check this out, @Páll Márton :)
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Thank you!
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@Jeff Giff What about this?
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Wowie!!!!!! RadMaths has become even better! Good work @Jeff Giff! You'll have to organize it a bit though, like removing the Mathathon as it is over, adding more space between 2 different series, etc.
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@Jeff Giff it is Vinayak Srivastavsa not Yinayak @Vinayak Srivastava ?
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Yes @Jeff Giff!
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Uh oh. Typo ^@^
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@Jeff Giff, check out this:
Magic Square Connections Study
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@Jeff Giff you might like to add my Coordinate geometry series. All of its questions are popular and level 5. :)
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The link is level 4 actually lol
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Yes, this question didn't live to the expectations, but it's atleast popular. :)
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@Jeff Giff, I think the actual PRMO discussion is this, so please change the link, that one has only sample questions. :)
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very nice collection. thank you
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Hey everyone! I just found a way to nest buttons!!! All we have to do is to quote in a button and make a button in the quote! Only we can’t nest tables :( @Frisk Dreemurr , @Yajat Shamji
Test: (Failed)
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Páll Márton would love this awww... but he is removed :(
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You used > to make a quote right
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How did you make it, I can create the nested button but can’t hide stuff in it
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Is it okay if I remake this note to make it more... accessible? I will give credit + link to this note as well if you do
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Ok :) but a better way would be to link this note in the daily problem solutions :) or would you just want the code for this note?
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You see, num IC has accessed this note from my daily solution :)
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Look:
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@Jeff Giff, the deed is done. Check out my latest note!
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@Jeff Giff mention[10101485:Jeff Giff]
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here
Check my new mentions page then,@Frisk Dreemurr mention[10427613:Frisk Dreemurr] (I need to add your mention Id)
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Line 25 may be my worst creation (holy cow I didn’t click enter) :P
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