Solving Method of Residues Homework Problem

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SUMMARY

The discussion focuses on solving the integral problem \(\int^{0}_{2\pi} \frac{d\theta}{13+5\sin\theta}\) using the method of residues. The user transforms the sine function into a complex variable representation, resulting in the contour integral \(\oint \frac{2}{5z^2+26zi-5} dz\). The polynomial is factored to find roots, specifically \(z = \frac{-26 \pm \sqrt{776}}{10}\). The user seeks assistance in progressing from this point to obtain the final answer.

PREREQUISITES
  • Complex analysis fundamentals, particularly contour integration.
  • Understanding of the method of residues in evaluating integrals.
  • Familiarity with polynomial factorization involving complex coefficients.
  • Knowledge of trigonometric identities and their transformations into complex variables.
NEXT STEPS
  • Study the method of residues in complex analysis for evaluating integrals.
  • Learn about contour integration techniques and their applications in solving real integrals.
  • Explore polynomial root-finding methods, especially for complex coefficients.
  • Review trigonometric identities and their conversions to complex forms, focusing on sine and cosine functions.
USEFUL FOR

Students and educators in mathematics, particularly those studying complex analysis and integral calculus, as well as anyone tackling advanced calculus problems involving the method of residues.

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Homework Statement



[itex]\int^{0}_{2\pi}[/itex] [itex]\frac{d\theta}{13+5sin\theta}[/itex]

Homework Equations





The Attempt at a Solution



so i changed it using [itex]sin \theta = \frac{1}{2i} (z - \frac{1}{z})[/itex]

and i get[itex]\oint \frac{2}{5z^2+26zi-5}[/itex] which i factored down to [itex](z = \frac{-26±\sqrt{776}}{10})[/itex]

but no matter how i proceed from here i can't get the answer, any ideas anyone?
 
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