March 14, 2015, is the last day the U.S. date will align with the first five digits of pi (3,1415) until 2115.
photos by Styrous®
The exact ratio is called π.
π can be computed from the Mandelbrot set, by counting the
number of iterations required before point (−0.75, ε) diverges.
Because π is a transcendental number, squaring the circle is not possible in a finite number of steps using the classical tools of compass and straightedge.
π can be estimated by computing the perimeters of circumscribed and inscribed polygons. Check out the humorous article, Prehistoric Calculus: Discovering Pi, by Kalid Azad who makes use of these polygons to demonstrate π (link below).
ƒ(x) = e−x2. The colored region between the function and the x-axis has area .
Random dots are placed on the quadrant of a square with a circle inscribed in it.
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Styrous® ~ Saturday, March 14, 2015