Brilliant staff support
LATE EVENTS:

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
2. Coordinate geometry 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. $\LaTeX$ formatting guides
- Percy Jackson
1. $\LaTeX$ formatting guides
- Daniel Liu
1. $\LaTeX$ formatting guides
- Hamza Anushath
1. $\LaTeX$ formatting guides
- Páll Márton
1. $\LaTeX$ formatting guides

Note by Jeff Giff
4 months, 4 weeks ago

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.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. 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 1paragraph 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 $2 \times 3$
2^{34} $2^{34}$
a_{i-1} $a_{i-1}$
\frac{2}{3} $\frac{2}{3}$
\sqrt{2} $\sqrt{2}$
\sum_{i=1}^3 $\sum_{i=1}^3$
\sin \theta $\sin \theta$
\boxed{123} $\boxed{123}$

Sort by:

Nice, @Jeff Giff

- 4 months, 4 weeks ago

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

- 4 months, 4 weeks ago

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

- 4 months, 4 weeks ago

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

Also, RMO stands for...?

- 4 months, 4 weeks ago

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

- 4 months, 4 weeks ago

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

• $a \gt 0 and a \neq 1$

• $b \gt 0$

- 4 months, 4 weeks ago

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

- 4 months, 4 weeks ago

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

- 4 months, 4 weeks ago

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

- 4 months, 4 weeks ago

Good idea! I’ll add them :)

- 4 months, 4 weeks ago

@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.

- 4 months, 4 weeks ago

Ok! Thanks!

- 4 months, 4 weeks ago

Thanks for the mention of Mathathon 2020 too!

- 4 months, 4 weeks ago

- 4 months, 3 weeks ago

- 4 months, 1 week ago

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

- 4 months, 1 week ago

Correction - 2 weeks and 3 days LOL

- 4 months, 1 week ago

Mathathon started, start posting solutions @Hamza Anushath

- 4 months, 1 week ago

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

- 4 months, 1 week ago

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

- 4 months, 1 week ago

No deduction for past questions go post the solutions!

- 4 months, 1 week ago

Thnx @Percy Jackson!

- 4 months, 1 week ago

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?

- 4 months, 4 weeks ago

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

- 4 months, 3 weeks ago

Thanks a lot @Zakir Husain

- 4 months, 3 weeks ago

Thanks to @Jeff Giff for adding this in the note

- 4 months, 3 weeks ago

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

- 4 months, 3 weeks ago

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

- 4 months, 3 weeks ago

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

- 4 months, 3 weeks ago

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

- 4 months, 4 weeks ago

👌 OK!

- 4 months, 4 weeks ago

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

- 4 months, 3 weeks ago

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

- 4 months, 3 weeks ago

@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.)

- 4 months, 3 weeks ago

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

- 4 months, 2 weeks ago

@Jeff Giff Thanks!

- 4 months, 2 weeks ago

Check this out, @Páll Márton :)

- 4 months ago

Thank you!

- 4 months ago

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.

- 4 months ago

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

- 4 months ago

Yes @Jeff Giff!

- 4 months ago

Uh oh. Typo ^@^

- 4 months ago

@Jeff Giff, check out this:

- 4 months ago

@Jeff Giff - You can use buttons in RadMaths to make it more rad. See my note Buttons to learn button formatting :)

- 3 months, 2 weeks ago

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

- 3 months, 2 weeks ago

@Jeff Giff you might like to add my Coordinate geometry series. All of its questions are popular and level 5. :)

- 2 months ago

The link is level 4 actually lol

- 2 months ago

Yes, this question didn't live to the expectations, but it's atleast popular. :)

- 2 months ago

Yes, it is a very good problem. I like all your problems, they are new and different, pretty cool according to me.

- 2 months ago

Thanku very much for your appreciation. :)

- 2 months ago