1. The problem statement, all variables and given/known data Take as a trial wavefunction for the hydrogen atom the 3D oscillator ground state wavefunction ψ(r) = N exp (-br^2 / 2). Calculate the value of b that gives the best energy and calculate this energy. 2. Relevant equations Radial part of ∇^2 = 1/r2 (∂/∂r) (r^2 ∂/∂r) 3. The attempt at a solution I am not sure what best energy is supposed to imply.