ABSTRACT

The gamma function, denoted Γ(x), is defined by

Γ( ) , 0 0

x e t dt xt x= >− − ∞ ∫ 1

Properties

Γ Γ

Γ

Γ Γ

( ) ( )

( )

( ) !

x x x x

n n n n n

+ = >

=

+ = = =

1 0

1 1

1 1 2

,

( ) ( , ,

x x x

,…)

( ) /sin

(

Γ Γ

Γ

Γ

( ) − =

    =

π π

π

) ( )Γ Γx x+ 

  =1

2 2π

3. Laplace Transforms

The Laplace transform of the function f(t), denoted by F(s) or L{f(t)}, is defined

F s f t e dt st( ) =

provided that the integration may be validly performed. A sufficient condition for the existence of F(s) is that f(t) be of exponential order as t→∞ and that it is sectionally continuous over every finite interval in the range t ≥ 0. The Laplace transform of g(t) is denoted by L g t{ ( )} or G(s).