Math Activities & News

Geometry - 2025 China National Math Olympiad Exam B

A geometry question requiring the knowledge of radical axis, and trigonometry methods.

Number Theory - Fermat Numbers and gcd's

This is a number theory question that requires the use of the difference of squares and the euclidean algorithm of gcd's

Calculus Maximum Question

Q(Geometry) 07

This question requires the use of angle chasing and the ability to identify and use cyclic quadrilaterals

Calculus Rate of Change Question

Using Taylor Series to prove cis(x)=e^(ix) --> polar

IB past paper trigonometry Question II

IB Trigonometry Past Paper Question

Easier Pythagoras thereom

Q(Inequality) 06

This question requires the AM-GM inequality used twice.