Consider a particle of mass in a half 1D harmonic oscillator, which has the potential () = { , 0 1 2 22, > 0 (a) [4 pts] Using WKB method to obtain condition of allowed bound state energies in this potential. You answer can be an equation involving (an integral of) the allowed energies . There is no need to solve the equation or complete the integral. You may directly write down the condition without derivation