1. The problem statement, all variables and given/known data Verify that a plane wave ψ(x) = Ae-ikx is a solution to the time independent Schrodinger equation for a free particle in one dimension. Can it be normalised? Why? 2. Relevant equations 3. The attempt at a solution My lecturer's notes are all over the place, which is frustrating. The only notes that I seem to have on this question, I cannot understand because they're scattered. If anyone has a link to a proof, or notes on it, I would be so grateful.