Find the laplace transform f(s) = {\mathcal l}\left\lbrace f(t) \right\rbrace of the function f(t) = e^{4t-20}h\! \left(t-5\right), defined on the interval t \geq 0. the h(t-a) is the heaviside function shifted a units horizontally. (class notes have u_a(t) = h(t-a)