please i need help and fast!by momen salah Tags: None 

#1
May708, 11:27 PM

P: 7

hi i'm new here and i wanted to ask a question
what is the laplace inverse of 1 ? i have been told that it's laplace transform of dirac(t). but what is dirac(t) please i have looked every where in the web for it it's two marks bonus for me if i get it and it's due today. 



#2
May808, 04:31 AM

HW Helper
P: 2,618

Did you try Wikipedia?
http://en.wikipedia.org/wiki/Dirac_delta_function [tex]L(\delta(ta)) = e^{as}[/tex] Let a=0. And there you have it. 



#3
May808, 06:05 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,886

The "Dirac delta function" is more commonly called just "the delta function". It is not, in fact, a "function" but rather a "generalized function" or "distribution". Roughly speaking that's a that's a functional: an operator that assigns a number to every function. The delta function assigns the number f(0) to every function f (so [itex]\delta(t a)[/itex] that Defennnder show assigns the number f(a) to every function f).




#4
May908, 04:50 AM

P: 7

please i need help and fast!
thanks guys



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