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Resolving NIntegrate and NSum non-numeric evaluation errors in oscillatory integrands

Posted 21 days ago

I'm working on a Mathematica code that involves nested NIntegrate and NSum with oscillatory integrands, but I'm encountering several non-numeric evaluation errors. The relevant part of the code is below:

When I run this, I get errors like:

Power::infy: Infinite expression 1/0 encountered.
NIntegrate::inumr: The integrand has evaluated to non-numerical values for all sampling points.
NSum::nsnum: Summand is not numerical at point m = 100.
POSTED BY: Reza rho

POSTED BY: Michael Rogers
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