I'm trying to obtain an answer from a double integral, but it appears to be timing out before I get my answer (it doesn't specify that it times out, I assume it does) and returns the problem I have given it in the form of a double integral with the same bounds. I try evaluating what Mathematica gave back, and it only returns the same thing after some time has been spent. How do I work around this or change this? I attached the .nb file that I'm trying to work with.
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