Pi

Pi
is , with numerical value .

DetailsDetails

Background
Background

  • Pi is the symbol representing the mathematical constant , which can also be input as . Pi is defined as the ratio of the circumference of a circle to its diameter and has numerical value 3.14159. Pi arises in many mathematical computations including sums, products, and integrals as well as in formulas from a wide range of mathematical and scientific fields. When Pi is used as a symbol, it is propagated as an exact quantity and so may be subjected to symbolic simplification during the course of a computation.
  • Pi can be evaluated to arbitrary numerical precision by means of the Chudnovsky formula using N. In fact, calculating the first million decimal digits of Pi takes only a fraction of a second on a modern desktop computer.
  • Most angle-related functions in the Wolfram Language take radian measures as their arguments and return radian measures as results. The symbol Degree, which is equal to , can therefore be used as a multiplier when entering values in degree measures.
Introduced in 1988
(1.0)
| Updated in 1996
(3.0)