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Benedict Irwin edited untitled.tex
over 8 years ago
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\end{equation}
Using inverse symbolic methods thanks to RIES and ISC, we find from accurate numerical integration \begin{equation}
\sigma_1 = \frac{-\sqrt{2}}{\sqrt[4]{\pi}}\int_{-\infty}^{\infty} xe^{-x^2/2}\mathrm{ln}(\frac{\sqrt{2}}{\sqrt[4]{\pi}}xe^{-x^2/2})\;dx = \sqrt{2}\sqrt[4]{\pi^3}i
\end{equation}
and
\begin{equation}
s_1 = \frac{-2}{\sqrt{\pi}}\int_{-\infty}^{\infty} x^2e^{-x^2}\mathrm{ln}(\frac{2}{\sqrt{\pi}}x^2e^{-x^2})\;dx = -\frac{1}{2} + \gamma + \mathrm{ln}(2) + \frac{1}{2}\mathrm{ln}(\pi)
\end{equation}
where $\gamma$ is the Euler-Mascheroni constant.