Solving Complex Integration with Residue Theorem

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SUMMARY

The forum discussion focuses on using the residue theorem to evaluate the integral of sinh(ax)/sinh(xπ) from -∞ to +∞, where 'a' is constrained between -π and π. Participants discuss the challenges of applying the residue theorem effectively, particularly in selecting appropriate closed paths for integration. One user mentions attempting rectangular trajectories through 0 and ia/π but finds them ineffective. The discussion emphasizes the necessity of understanding closed paths in complex integration when utilizing the residue theorem.

PREREQUISITES
  • Understanding of complex analysis and contour integration
  • Familiarity with the residue theorem
  • Knowledge of hyperbolic functions, specifically sinh
  • Experience with evaluating integrals over closed paths
NEXT STEPS
  • Study the application of the residue theorem in complex analysis
  • Research techniques for selecting closed paths in contour integration
  • Learn about hyperbolic functions and their properties
  • Explore examples of integrals involving sinh and other hyperbolic functions
USEFUL FOR

Students and professionals in mathematics, particularly those studying complex analysis, as well as anyone looking to deepen their understanding of the residue theorem and its applications in integration.

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Homework Statement



use residue theorem to integrate sinh(ax)/sinh(xpi) from -infinity to +infinity, a is between -pi and pi

Homework Equations



residue theorem

3
. The attempt at a solution

i tried rectangular trajection through 0 and ia/pi with the function sinh(az)/sinh(zpi) and some other trajectories but it doesn't really work
 
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The residue theorem applies to integration over closed paths. What closed paths have you used?
 

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