I have a question.
f(t) =t^3*e^-4t using theorm 1 and 2.
what im wondering is can I take the t^3 outside the integral as a constant
t^3| e^-st * e^-4t (between 0 and infinity)
t^3 [ e-st/-s + e^-4t/s] (between 0 and infinity) or should I be thinking of partial fractions all of which are kind of new to me.