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Fungrim entry: dae4a7

π=(ex2dx)2\pi = {\left(\int_{-\infty}^{\infty} {e}^{-{x}^{2}} \, dx\right)}^{2}
TeX:
\pi = {\left(\int_{-\infty}^{\infty} {e}^{-{x}^{2}} \, dx\right)}^{2}
Definitions:
Fungrim symbol Notation Short description
ConstPiπ\pi The constant pi (3.14...)
Powab{a}^{b} Power
Integralabf(x)dx\int_{a}^{b} f(x) \, dx Integral
Expez{e}^{z} Exponential function
Infinity\infty Positive infinity
Source code for this entry:
Entry(ID("dae4a7"),
    Formula(Equal(ConstPi, Pow(Integral(Exp(Neg(Pow(x, 2))), For(x, Neg(Infinity), Infinity)), 2))))

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2019-10-05 13:11:19.856591 UTC