Here's the problem: http://www.phys.washington.edu/users/karch/324/2007/hw3.pdf Just the first one. Okay, so my understanding is that the first state of Psi (ground state) is just an arc, like a Gaussian distribution, starting from 0 at E0 and finishing at 5a also at the level of E0. The next ones are just sine waves at higher frequencies. So would I just draw a high frequency sine wave of amplitude E0 until I get to the "jump" at 2a, and then just decrease the the amplitude that that point, but keep the frequency the same? Or since the frequency corresponds to energy, and I don't have as much of a jump from E0 to the bottom of the well, I should keep the amplitude constant the whole time, but decrease the frequency once I get to the "jump" at 2a? The book only mentions an infinite square well and doesn't really go into it.