Integral that MAPLE could not evaluate

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Discussion Overview

The discussion centers around the evaluation of a complex integral involving an exponential function with a complex irrational trigonometric function as the exponent. The integral is part of a solution related to radiation waves from a disc-shaped source. Participants explore the challenges faced when using MAPLE for evaluation and consider alternative approaches.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant shares a PDF output from MAPLE, indicating that it could not evaluate the integral when integrating with respect to the angle phi.
  • Another participant suggests that the integral resembles a variation of an elliptic integral.
  • Another viewpoint is presented that questions the possibility of a closed form evaluation for this integral.
  • A later reply seeks clarification on whether the previous participant implies that the integral can only be evaluated numerically for specific values of r and theta.

Areas of Agreement / Disagreement

Participants express differing opinions on the nature of the integral, with some suggesting it may relate to elliptic integrals while others argue against the possibility of a closed form evaluation. The discussion remains unresolved regarding the best approach to evaluate the integral.

Contextual Notes

There are limitations regarding assumptions about the integral's form and the specific conditions under which it may be evaluated. The discussion does not resolve the mathematical steps or the applicability of numerical methods.

tsunamiBTP
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I have attached a pdf of output from MAPLE attempting to evaluate an integral of an exponential function containing a complex irrational trig function as the exponent. MAPLE could not evaluate it when integrating with respect to the hangle phi. I then transformed the integral via varible substitutions to hopefully get it in a form that might be executable, but no luck there either.

Any suggestions?

This integral is a portion of a solution of a radiation wave emanating in the vicinity of source that is configured as a disc.
 

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That looks to me like a variation on an elliptic integral.
 
There is no reason to think this integral has a closed form evaluation.
 
Is g_edgar suggesting that this integral can only be evaluated numerically for specific values for r & theta?
 

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