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Memorizing Pi

Posted on June 26, 2019 by Samuel Nunoo

The digits of Pi are fascinating. As the ratio of the circumference of a circle to its diameter, Pi has...

Posted on June 26, 2019 by Samuel Nunoo

Most calculus students have learned of the “reflecting properties” of the parabola and the ellipse. If a “beam of light” emanates from the...

Posted on June 26, 2019 by Samuel Nunoo

Ride a bike with round wheels and it rolls smoothly on a flat road (i.e., the axle remains level). Can...

Posted on June 26, 2019 by Samuel Nunoo

The following is a “proof” that one equals zero. Consider two non-zero numbers x and y such that x =...

Posted on June 26, 2019 by Samuel Nunoo

There are many facts which can be proved just by looking at a picture! For instance:x2 – y2 = (x+y) (x-y)is illustrated...

Posted on June 5, 2019 by Ashley Tung

Here’s a challenging problem with a surprisingly easy answer: can you show that for any 5 points placed on a sphere,...