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Fungrim entry: 7ce79e

π=4atan⁡ ⁣(13)+4atan⁡ ⁣(14)+4atan⁡ ⁣(17)+4atan⁡ ⁣(113)\pi = 4 \operatorname{atan}\!\left(\frac{1}{3}\right) + 4 \operatorname{atan}\!\left(\frac{1}{4}\right) + 4 \operatorname{atan}\!\left(\frac{1}{7}\right) + 4 \operatorname{atan}\!\left(\frac{1}{13}\right)
TeX:
\pi = 4 \operatorname{atan}\!\left(\frac{1}{3}\right) + 4 \operatorname{atan}\!\left(\frac{1}{4}\right) + 4 \operatorname{atan}\!\left(\frac{1}{7}\right) + 4 \operatorname{atan}\!\left(\frac{1}{13}\right)
Definitions:
Fungrim symbol Notation Short description
Piπ\pi The constant pi (3.14...)
Atanatan⁡(z)\operatorname{atan}(z) Inverse tangent
Source code for this entry:
Entry(ID("7ce79e"),
    Formula(Equal(Pi, Add(Add(Add(Mul(4, Atan(Div(1, 3))), Mul(4, Atan(Div(1, 4)))), Mul(4, Atan(Div(1, 7)))), Mul(4, Atan(Div(1, 13)))))))

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2021-03-15 19:12:00.328586 UTC