1. The problem statement, all variables and given/known data Find the laplace transform of u(-t) 2. Relevant equations 3. The attempt at a solution For u(t), the laplace transform of it is 1/s, basically taking the integral of e^-st from 0 to infinity. In this case, since the unit step function approaches from the negative side, do I just take the integral of e^(-st), but switch the limit (from infinity to 0) for the purpose of transformation, leaving with -1/s?