1. The problem statement, all variables and given/known data What is the functional form of the wave function in the ground state in the five regions x<0, 0<x<a, a<x<b, b<x<L, and x>L? I've attached the picture of the potential well as well here: 2. Relevant equations Schrodinger time independent equation 3. The attempt at a solution I understand that for x < 0 and x > L, ψ = 0 because there's no possibility of the particle being there. And then between a and b: ψ = A*sin(kx) + B *cos(kx) where k = √(2mE)/(hbar)2 It's between 0 < x < a and b < x < L that I'm having issues. Can anyone point me in the right direction? Thanks!