BEST FRIEND @blackpenredpen
BEST FRIEND @blackpenredpen
Updated September 2026, 4 days ago
BEST FRIENDan evil differential equation quizThe last question from the Berkeley mini Math Tournament (for 8th graders)calculus teacher vs I know it already studentA taste of when there are no numbers in mathCan 0^x=2? (solution by a viewer)Factoring a trinomial (what I learned in Taiwan vs in US)Quadratic formula for non-constant coefficientsSum of n/2^n*cos(n*pi/3) using complex numbersMy all-in-one calculus problemYou see nonlinear equations, they see linear algebra! (Harvard-MIT math tournament)finally 0^0 approaches 0 (after 6 years!)
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