- #1
Chronos000
- 80
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Homework Statement
I'm given the expression for the operator Pr Y
Pr Y= -ih(bar) (1/r) d/dr (r Y)
I want to find Pr^2 Y so I have dotted Pr with Pr
I expect to get:
-h(bar)^2 (1/r) d/dr [ Y(Y + r dY/dr)]
but my notes have omitted the first Y in the above bracket and I can't see why.