> Physics has more than just the Schrödinger equation. It was a course in Quantum Mechanics, specifically. > With a solid foundation in second-order PDEs, it'

> Physics has more than just the Schrödinger equation. It was a course in Quantum Mechanics, specifically. > With a solid foundation in second-order PDEs, it's a matter of setting up the boundary conditions and solving for the Fourier series. The boundary conditions were superimposeable combinations of simpler forms, so it was mostly a matter of determining the correct Fourier series for those forms, then simplifying. In a usual undergrad course on QM, e.g., following Griffiths, one only solves SE with particular choices of potential -- usually only infinite well and QHO, and maybe a double well to illustrate tunneling. Neither really requires a background in Fourier series.