A particle with mass m and energy E is moving in one dimension from right to left. It is incident on the step potential V(x)=0 for x<0 and V(x)=Vo <--(pronounced "v not") for x>=0, where Vo>0, as shown on the diagram. The energy of this particle is E>Vo. (The diagram has a particle coming in from the left above V=Vo) Solve the Schrodinger equation to derive the wave function for x<0 and x>=0. Express the solution in terms of a single unknown constant. I have been looking at the case when a particle is coming in from the right and E>Vo, but I am failing to make a connection between the two. I really need the idea explained to me here, I'm missing something!!!