The four stamps, issued by China Post, each depict pi the mathematical constant, the Pythagorean theorem, Euler's formula and the Mobius strip. China Post has also developed several games that require ...

Instead of memorizing several complicated trig formulas, you need only one equation to rule them all: Euler’s 1740 formula. With decent algebra skills, you can manipulate Euler’s formula to ...

Even Leonhard Euler, one of the greatest mathematicians, supposedly computed √(-2) √(-3) as √6. The correct answer is -√6. In high school, you may have encountered the quadratic formula, which gives ...