\[ \frac{1}{\sqrt{2\pi}\sigma}\int_{-\infty}^{\infty} \exp \left\{-\frac{(x-\mu)^2}{2\sigma^2}\right\} \] \[ ab \] \begin{eqnarray*} \cos{x} + i \sin{x}& = &\left(\cos{\frac{x}{n}} + i \sin{\frac{x}{n}}\right)^n \\ & \rightarrow &\left(1 +…