Thread: expected value of Q(x,p) View Single Post

Recognitions:
Homework Help
To find the expected value of Q(x,p) we evaluate $<\psi|Q(x,-i\hbar \frac{\partial }{\partial x})|\psi>$. But what do you do if you want to find, say, <p^(3/2)>. How do you raise the derivative operator to the three-halves?