The ground state wavefunction for a square well potential (with V = -25 hartrees and a width of -0.1 < x < 0.1) is given by:
2*A*Cos(s*a)*Exp(k*(x+a)) for -∞ < x < -a
2*A*Cos(s*a) for -a < x < a
2*A*Cos(s*a)*Exp(-k*(x-a)) for a < x < ∞
What is the normalization constant A for this wavefunction?