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Apr 29th, 2016
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  1. Integrate[E^(I a x)/(x^2 - b^2), {x, -Infinity, Infinity},
  2. Assumptions->{a > 0, b != 0, b ∈ Reals}]
  3.  
  4. -((π (I Abs[b] Cos[a b] + b Sin[a b]))/b^2)
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