RadMaths

Welcome to RadMaths! We will update popular maths problems and discussions to help you learn, think more and advance in Maths.
Brilliant staff support
LATE EVENTS:
prime factor finding event

Problems:
- Alice Smith
1. SAT 1000 series
2. Luogu series
3. reach the summit series
- Zakir Husain
1. Pre-RMO questions
- Jeff Giff
1. Dr Fiendish series
1,2,3,4
- Aryan Sanghi
1. When two lines meet series

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. PRMO discussion
- Páll Márton
1. Proof chain
- Jeff Giff
1. Bilingual geometry note

Formatting:
- Brilliant
1. LaTeX\LaTeX formatting guides
- Percy Jackson
1. LaTeX\LaTeX formatting guides
- Daniel Liu
1. LaTeX\LaTeX formatting guides
- Hamza Anushath
1. LaTeX\LaTeX formatting guides
- Páll Márton
1. LaTeX\LaTeX formatting guides

Note by Jeff Giff
1 month, 2 weeks ago

No vote yet
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:

  • 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.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # 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"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 2×3 2 \times 3
2^{34} 234 2^{34}
a_{i-1} ai1 a_{i-1}
\frac{2}{3} 23 \frac{2}{3}
\sqrt{2} 2 \sqrt{2}
\sum_{i=1}^3 i=13 \sum_{i=1}^3
\sin \theta sinθ \sin \theta
\boxed{123} 123 \boxed{123}

Comments

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Nice, @Jeff Giff

Yajat Shamji - 1 month, 2 weeks ago

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What about my Recurring Proof Notes? You think they are useful to your note, @Jeff Giff?

Yajat Shamji - 1 month, 2 weeks ago

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@Jeff Giff- Try my A Pre-RMO question! series, Math also Fails! series.

Zakir Husain - 1 month, 2 weeks ago

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That's a definite one for @Jeff Giff to try - the Pre-RMO questions.

Also, RMO stands for...?

Yajat Shamji - 1 month, 2 weeks ago

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By the way, try this for Math Also Fails - eiπ=1,(eπ)i=1,e^{i\pi} =-1, (e^\pi)^i =-1, then i=logeπ1?!i=\log_{e^\pi} -1?!

Jeff Giff - 1 month, 1 week ago

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No actually, definition of log clearly states that logablog_ab is defined only when

  • a>0anda1a \gt 0 and a \neq 1

  • b>0b \gt 0

Aryan Sanghi - 1 month, 1 week ago

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Well it is correct, and not surprising if you know the Taylor series of ln\ln and this

Zakir Husain - 1 month, 1 week ago

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If you want a big and detailed explanation you can ask for that (can even write a note!)

Zakir Husain - 1 month, 1 week ago

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Oops.. that’s logarithm for negative numbers :/

Jeff Giff - 1 month, 1 week ago

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Good idea! I’ll add them :)

Jeff Giff - 1 month, 2 weeks ago

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@Jeff Giff, Thanks for the mention for my LaTeX\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.

Percy Jackson - 1 month, 1 week ago

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Ok! Thanks!

Jeff Giff - 1 month, 1 week ago

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Thanks for the mention of Mathathon 2020 too!

Percy Jackson - 1 month, 1 week ago

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And please add mine too @Jeff Giff (I am Hamza Anushath)

Frisk Dreemurr - 1 month, 1 week ago

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@Frisk Dreemurr @Hamza Anushath - He still didn't add your Latex note, LOL

Percy Jackson - 3 weeks, 4 days ago

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@Percy Jackson Yeah, it has been two weeks @Percy Jackson @Jeff Giff

Frisk Dreemurr - 3 weeks, 4 days ago

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@Frisk Dreemurr Correction - 2 weeks and 3 days LOL

Percy Jackson - 3 weeks, 4 days ago

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@Frisk Dreemurr Mathathon started, start posting solutions @Hamza Anushath

Percy Jackson - 3 weeks, 4 days ago

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@Percy Jackson Yeah, if I post solutions for past questions, will I still get points @Percy Jackson

Deduct five points from the total due to late submission if you'd like as well

Frisk Dreemurr - 3 weeks, 4 days ago

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@Frisk Dreemurr Cuz I didn't see the Mathathon problems till just now @Percy Jackson...

Frisk Dreemurr - 3 weeks, 4 days ago

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@Frisk Dreemurr No deduction for past questions go post the solutions!

Percy Jackson - 3 weeks, 4 days ago

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@Percy Jackson Thnx @Percy Jackson!

Frisk Dreemurr - 3 weeks, 4 days ago

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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?

Aryan Sanghi - 1 month, 1 week ago

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@Jeff Giff Add this sreies also, of @Aryan Sanghi

Zakir Husain - 1 month, 1 week ago

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Thanks a lot @Zakir Husain

Aryan Sanghi - 1 month, 1 week ago

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@Aryan Sanghi Thanks to @Jeff Giff for adding this in the note

Zakir Husain - 1 month, 1 week ago

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@Zakir Husain Yes, @Jeff Gift great initiative this is like Percky Jackson.

Aryan Sanghi - 1 month, 1 week ago

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@Jeff Giff Also try to add polyfon series by @Aryan Sanghi

Zakir Husain - 1 month, 1 week ago

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Yes,thanku. I'll try to make the polyfun series more vast by adding more problems to it.

Aryan Sanghi - 1 month, 1 week ago

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@Jeff Giff- Kindly mention this note instead of my feed for Pre-RMO question series.

Zakir Husain - 1 month, 1 week ago

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👌 OK!

Jeff Giff - 1 month, 1 week ago

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@Jeff Giff, could you add my note\color{#333333}\text{add my note} too as a LaTeX\LaTeX guide, it has many new facts and features which may only have been mentioned by me

Frisk Dreemurr - 1 month, 1 week ago

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Click the add my note\text{add my note} to access my note @Jeff Giff

Frisk Dreemurr - 1 month, 1 week ago

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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.)

Yajat Shamji - 1 month, 1 week ago

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@Jeff Giff - Kindly add this in RedMaths ''Late Events''

Zakir Husain - 1 month ago

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@Jeff Giff Thanks!

Zakir Husain - 1 month ago

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Check this out, @Páll Márton :)

Jeff Giff - 3 weeks ago

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Thank you!

Páll Márton - 3 weeks ago

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@Jeff Giff What about this?

Zakir Husain - 2 weeks, 6 days ago

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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.

Percy Jackson - 3 weeks ago

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@Jeff Giff it is Vinayak Srivastavsa not Yinayak @Vinayak Srivastava ?

Zakir Husain - 2 weeks, 6 days ago

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Yes @Jeff Giff!

Vinayak Srivastava - 2 weeks, 6 days ago

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Uh oh. Typo ^@^

Jeff Giff - 2 weeks, 6 days ago

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@Jeff Giff, check out this:

Magic Square Connections Study

Yajat Shamji - 2 weeks, 6 days ago

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@Jeff Giff - See my Biology Problem Series note on my profile :)

Percy Jackson - 1 week, 1 day ago

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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 :)

Percy Jackson - 4 days, 8 hours ago

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I used it in anther note :) I don’t think it is necessary to add buttons here :)

Jeff Giff - 4 days, 7 hours ago

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