After learning about the Taylor series for 1/(1+x) in calculus, you can find an interesting expression for Pi very easily. Start with...

Continue reading...# pi formula

## Finding the N-th digit of Pi

Here is a very interesting formula for pi, discovered by David Bailey, Peter Borwein, and Simon Plouffe in 1995:Pi =...

Continue reading...## Pi Approximations

Pi is the ratio of the circumference of a circle to its diameter. It is known to be irrational and its decimal...

Continue reading...## Buffon Needle Problem

A plane is ruled with parallel lines 1 cm apart. A needle of length 1 cm is dropped randomly on...

Continue reading...## Wallis’ Formula

Here’s a fun formula for Pi involving an infinite product, known as Wallis’ Formula: (Pi/2) = (2*2)(4*4)(6*6)/(1*3)(3*5)(5*7) It is somewhat surprising that...

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