What is Mathchan?

Mathchan is an anonymous imageboard for mathematicians, engineers, software developers and scientists. It features an easy way of embedding formulas, diagrams, figures, graphs and code inside user posts in order to enable effective communication of mathematical thought. To post on Mathchan, you must be able to solve Mathchan's custom captcha which is intended to disable both robots and insufficiently qualified users from posting.

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Popular threads

Mathematics

R: 15 / I: 0 no eureka for today, gentlemen

Mathematics

R: 17 / I: 3

List of differential equations

Post diff eqs and their solutions.

Mathematics

R: 38 / I: 4 Is thrembo real? It's an integer between 6 and 7.

Mathematics

R: 36 / I: 3

/math olympiad/ general

So, I have a cousin who wants to win medals in math competitions, especially IMO. Post resources, guides and tips for olympiads.
his prep level: he's 12yo(7th standard), has completed mathematics books upto the 10th standard level. What should be his target next? And how do I help him clear doubts? We don't have decent teachers where we live, and the internet doesn't help much

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