Formula for π - It's National Pi Day 3/14

  • 0
  • 2
  • Question
  • Updated 8 months ago
  • Doesn't Need an Answer
It is my favorite day of the year - National Pi Day.

Everybody is getting in on the fun including Google and QuickBase.

Today Is the 30th Anniversary of Pi Day
Here's What to Know About the Mathematical Holiday
http://time.com/5198663/google-doodle-pi-day-30-anniversary/

To celebrate here is my QuickBase formula for π from the 15th century (Nilakantha):
3 +
4 * (
  1 / ( 2 *  3 *  4) -  
  1 / ( 4 *  5 *  6) + 
  1 / ( 6 *  7 *  8) - 
  1 / ( 8 *  9 * 10) + 
  1 / (10 * 11 * 12) - 
  1 / (12 * 13 * 14) + 
  1 / (14 * 15 * 16) -
  1 / (16 * 17 * 18) +
  1 / (18 * 19 * 20) -
  1 / (20 * 21 * 22) +
  1 / (22 * 23 * 24) -
  1 / (24 * 25 * 26)
)
Which evaluates to : 3.1414796890043

Not too shabby and certainly beats memorizing all those digits.
Photo of Ⲇanom the ultimate (Dan Diebolt)

Ⲇanom the ultimate (Dan Diebolt), Champion

  • 26,572 Points 20k badge 2x thumb

Posted 8 months ago

  • 0
  • 2
Photo of QuickBaseCoach App Dev./Training

QuickBaseCoach App Dev./Training, Champion

  • 51,546 Points 50k badge 2x thumb
Very elegant formula and incredible that it was done in the 15th century.
Photo of Ⲇanom the ultimate (Dan Diebolt)

Ⲇanom the ultimate (Dan Diebolt), Champion

  • 26,572 Points 20k badge 2x thumb
And it is 100% native!
Photo of QuickBaseCoach App Dev./Training

QuickBaseCoach App Dev./Training, Champion

  • 51,546 Points 50k badge 2x thumb
Nice π in your subject line btw. It is difficult to find that character on my iPad during breakfast.