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JSCB
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Integral of exp(-x²) dx over R = GammaΓ(1/2) = sqrt(π)√π. Proof: square the Gaussian integral and use polar coordinates!

Integral of exp(-x²) dx over R = Gamma(1/2) = sqrt(π). Proof: square the Gaussian integral and use polar coordinates!

Integral of exp(-x²) dx over R = Γ(1/2) = √π. Proof: square the Gaussian integral and use polar coordinates!

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Noam D. Elkies
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Integral of exp(-x²) dx over R = Gamma(1/2) = sqrt(π). Proof: square the Gaussian integral and use polar coordinates!

Post Made Community Wiki by Noam D. Elkies