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Homework Statement
Prove the statement
http://www.mathhelpforum.com/math-help/vlatex/pics/60_32c8daf48ffa5f233ecc2ac3660e517e.png
The Attempt at a Solution
I am clueless as to how I would go about doing this, I know the basic properties. I think it has to do with using epsilon somewhere and taking the limit as epsilon approaches zero, as shown here:
http://www-thphys.physics.ox.ac.uk/people/JohnMagorrian/mm/dirac.pdf
but I really have no idea how they're using it. The prof did something similar in class but he used -epsilon to epsilon in the limits of integration to show that the integral of δ(x)f(x) is just f(0).
Pretty mysterious to me, any help is greatly appreciated.
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