dirac delta

mathgolfer said:
What is the derivative of the dirac delta?
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go to:

http://mathworld.wolfram.com/DeltaFunction.html

dirac delta function, strictly speaking, is only defined when integrated against a ``well-behaved'' function. In other words, the frequently quoted definition

``this function equals zero everywhere, except at where it is infinite so that its integral is one''

is in conflict with the classical definition of a function and integral.
 
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