Hello I would like to do the Fourier Transform of
H1'[t - L2[t]/c - L2primo[t]/c]
I know that its transform has to be:
i ω H1[ω]* Exp[- I ω (L2[t]/c + L2primo[t]/c)
I have considered L2[t] and L2primo[t] to be constant and not to be transformed...
In order to do that in mathematica I did this function:
Argomentof[e_] := Collect[e[[1, 2 ;;]], -1/c] myFTd[f_, (q_: 1) expr_, ω_] := q*I* ω*f[ω]*Exp[I ω Argomentof[expr]];
if I do
myFTd[H1,L2primo[t]H1'[t - L2[t]/c - L2primo[t]/c] L2'[t])/c^2, ω]
(I Exp^(I ω L2primo) ω H1[ω])/c^2
that is wrong...anyone can help?