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Quick derivation question Quantum Mechanics

  1. Feb 1, 2015 #1
    1. The problem statement, all variables and given/known data
    Having one of those days where nothing makes sense, here is the derivation:

    RbXoteR.jpg

    how does he get the two circled terms from what he's derived above?

    2. Relevant equations
    N/A

    3. The attempt at a solution
    I tried substitution but get nowhere I just cant see how the early expressions help in getting the circled expressions.

    once again, any pointers in the right direction would be appreciated
     
  2. jcsd
  3. Feb 1, 2015 #2
    Er...isn't it just a matter of multiplying both sides by [itex]i \hbar[/itex]?
     
  4. Feb 1, 2015 #3
    thanks i'll go shoot myself now.

    appreciated ;-)
     
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