Find the inverse Laplace transform of:

Question

F(s)=2/s^4

Answer 1

L{1} = 1/s
L{t^n f(t)} = (-1)^n F⁽ⁿ⁾(s)

so, L{t^3} = 6/s^4

so,
f(t) = 1/3 t^3