Consider the free-particle wavefunction,
The Attempt at a Solution
The wavefunction is already normalized, so the next thing to find is coefficient expansion function (θ(k)), where:
θ(k)=∫dx*ψ(x)*exp(-ikx) from -infinity to infinity
But this equation seems to be impossible to solve without error function (as maple 16 tells me).
Is there any trick to solve this?