1. The problem statement, all variables and given/known data What is the laplace transform of H(-t-17) 2. Relevant equations Shifting theorem: L(H(t-a)) = (e^-as)/s 3. The attempt at a solution This is the only part of the problem that I can not get (this part is from a larger differential equation I'm trying to solve). I'm can't seem to figure out how the Laplace transform changes if there is a negative sign in front of the t. I'm not sure if there are some properties of the Heaviside function that will allow me to solve this that I simply don't know and that we didn't go over in class.