Fungrim entry: 769f6e

\pi = 2 \,{}_2F_1\!\left(1, 1, \frac{1}{2}, \frac{1}{2}\right) - 4

TeX:

\pi = 2 \,{}_2F_1\!\left(1, 1, \frac{1}{2}, \frac{1}{2}\right) - 4

Definitions:

Fungrim symbol	Notation	Short description
`Pi`	$\pi$	The constant pi (3.14...)
`Hypergeometric2F1`	$\,{}_2F_1\!\left(a, b, c, z\right)$	Gauss hypergeometric function

Source code for this entry:

Entry(ID("769f6e"),
    Formula(Equal(Pi, Sub(Mul(2, Hypergeometric2F1(1, 1, Div(1, 2), Div(1, 2))), 4))))

Topics using this entry

2021-03-15 19:12:00.328586 UTC