(x*e^(-i*q*t/h)+i*y*e^(-i*r*t/h))*(x*e^(i*q*t/h)-i*y*e^(i*r*t/h))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.