- #1

michonamona

- 122

- 0

## Homework Statement

Why is the equality below true?

[tex]\Gamma(n) = (n-1)![/tex]

Where [tex]\Gamma(n) = \int^{\infty}_{0} x^{n-1} e^{-x}dx[/tex]

## Homework Equations

## The Attempt at a Solution

I've read the article on wikipedia but I cannot understand it. Is there any special properties in calculus that I must know in order to comprehend this?

Thank you

M