10
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Fixed in 10.1


Bug is present as of version 10.0.2 checked on windows 7, 64 bit


Is this a bug or I missed something? NIntegrate seems to give a different answer for the same integrand when the option Method -> {Automatic, "SymbolicProcessing" -> 0} is given.

$Version
(* "10.0 for Mac OS X x86 (64-bit) (June 29, 2014)" *)

$Assumptions = w ∈ Reals;
FEx[w_] = (I E^(-25 + 5 I w - w^2/4) Sinh[5 w])/Sqrt[2];
NIntegrate[Conjugate[FEx[w]]*FEx[w], {w, -∞, ∞}]
NIntegrate[Conjugate[FEx[w]]*FEx[w], {w, -∞, ∞}, 
 Method -> {Automatic, "SymbolicProcessing" -> 0}]
(* 0.313329 + 0. I *)
(* 0.626657 + 0. I *)

version 10

enter image description here

version 9

enter image description here

version 8

enter image description here

It seems to have worked in version 7.

version 7

enter image description here

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3
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Since it was Daniel Lichtblau who added the tag , I would say the answer to your question is "yes".

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  • $\begingroup$ Therefore, should be reported to Wolfram Technical Support. $\endgroup$ – rhermans Sep 6 '14 at 7:25
  • $\begingroup$ @rhermans. I think you can take that as done. $\endgroup$ – m_goldberg Sep 6 '14 at 9:48
  • $\begingroup$ Can you explain why? Is it in the sense that you trust somebody already did, you know somebody did, or is it that Wolfram Technical Support actually participates in here? $\endgroup$ – rhermans Sep 6 '14 at 11:07
  • 4
    $\begingroup$ @rhermans. Google "Daniel Lichtblau". $\endgroup$ – m_goldberg Sep 6 '14 at 21:20

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