1. The problem statement, all variables and given/known data Hi guys, so I'm struggling with understanding the heaviside function clearly. In particular, I am struggling to understand how changing f(t) to f(t-3) ''shifts'' everything to the right. 2. Relevant equations Say we take the following heaviside function f(t-3) = 7 for t >= 3 f(t-3) = 0 for t < 0 We get a graph that loops something like this: http://img41.imageshack.us/img41/2830/q8e8.png [Broken] 3. The attempt at a solution However, this doesn't make much intuitive sense to me. Say we are to plug in the value of t=3, then we should get at t=3, the value of f(0), but there has not been anything told to us about how the function behaves at f(0). Only that for values t>3, the value will be 7. So I don't really understand how this function is working. Thanks for your time.