Can anyone help med understand the manipulations done to the integral operator equation attached? θ(t) is the heaviside function so:
θ(t1-t2) = {1 for t1>t2 0 t1<t2}
The t1 and t2 are dummy variables and I don't see how the rewriting takes place.
θ(t1-t2) = {1 for t1>t2 0 t1<t2}
The t1 and t2 are dummy variables and I don't see how the rewriting takes place.
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