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I have spent some time looking in Schaums, Eric Weisstein and google for the answer but cannot find it so I thought i'd see if anyone here could.

I would like to find the second derivative or |x| please. (wrt x).

I think there are some delta functions in there but would like to see where they come from.

Thank-you in advance.

Richard

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# Derivative of Abs(x)

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