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Attached a word file please open.
The problem is very elementary, but is difficult to find out the right answer.
The problem is asking the way of calculationg an average value of a variable of a quantum mechanical system.
The quantum mechanical system under consideration comprises many variables.
I am asking you whether the conventional way of calculating the one is absolutely correct?
Or <A'> might be more accurate than <A>?
Thank you for reading the file.
I will be glad if one can respond to my inquiry.
Yamada in a strange world.
December 18, 2012
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