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A integral


When I input:

  Integrate[E^(I k x), {x, -\[Infinity], +\[Infinity]}]

It comes out:

  Integrate::idiv: Integral of E^(I k x) does not converge on {-\[Infinity],\[Infinity]}

But I hope the result is:
  DiracDelta[k]

Does anyone know how to do it?


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