Proving the Convolution Theorem for Laplace Transform

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matematikuvol
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[tex]\mathcal{L}\{f(t)*g(t)\}=F(s)G(s)[/tex]

Is there some relation between

[tex]F(s)*G(s)[/tex] and [tex]f(t)g(t)[/tex]?

##*## is convolution.
 
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Yes, there is.

See here. Check out the 'multiplication' part under the 'Properties and theorems' section.
 
Sorry but I see here only convolution of originals.
 
Here, let me help you, I've taken a snapshot of it:

Table row from a Laplace transform properties table, labelled Multiplication: f(t)g(t) equals (1/2πi) lim T→∞ integral from c−iT to c+iT of F(σ)G(s−σ) dσ, with a note that the integration runs along the vertical line Re(σ) = c within the region of convergence of F.


The convolution is being done over an imaginary line [itex]Re{(\sigma)} = c[/itex]
 
Ok. Tnx. Do you know how to prove?

##F(s)*G(s)=f(t)g(t)##?