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Fungrim entry: 769f6e

π=22F1 ⁣(1,1,12,12)4\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
Piπ\pi The constant pi (3.14...)
Hypergeometric2F12F1 ⁣(a,b,c,z)\,{}_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))))

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2021-03-15 19:12:00.328586 UTC