## Monday, 2 July 2012

### Gil-Palaez Theorem

It Helps us to Find the CDF of a Random Variable Directly from MGF or Characteristic Function .

if $X$ is any Random Variable with Characteristic Function (CF) given by

$$\Phi_X(\omega)= \int_{-\infty}^{\infty} f_X(x) e^{j \omega x} dx$$, Then

$$F_X(x)=0.5-\frac{1}{j\,\pi}\int_0^{\infty} \frac{\Phi_X(\omega)}{\omega} d \omega$$