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• \int_{-\infty}^{\infty} \frac{1}{\sqrt{2\pi\sigma^2}} \exp\left(-\frac{(x-\mu)^2}{2\sigma^2}\right) \cdot \sum_{n=0}^{\infty} \frac{(-1)^n}{n!} \left(\frac{x-\mu}{\sigma}\right)^{2n} dx
  $${\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}\frac{1}{\sqrt{2\pi {\sigma }^2}}\exp (-\frac{(x-\mu {)}^2}{2{\sigma }^2})\cdot \sum _{n=0}^{\mathrm{\infty }}\frac{(-1{)}^n}{n!}{\left(\frac{x-\mu }{\sigma }\right)}^{2n}dx$$
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