Integral Calculation: Analytical Calc of k_0 W L J_0

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Discussion Overview

The discussion revolves around the analytical calculation of a specific integral involving trigonometric functions and the Bessel function of the first kind. Participants explore methods for evaluating the integral, including potential numerical approaches.

Discussion Character

  • Homework-related, Exploratory, Technical explanation

Main Points Raised

  • kprokopi presents the integral to be calculated and suggests the use of sine integrals as a potential method.
  • Some participants humorously question the difficulty of the integral, implying it may be overly complex.
  • Several participants recommend using Mathematica for numerical evaluation of the integral instead of attempting an analytical solution.
  • One participant suggests using the trapezium rule for numerical approximation, indicating a preference for a simpler method.

Areas of Agreement / Disagreement

There is no consensus on how to approach the integral, with multiple competing views on whether to pursue an analytical solution or to rely on numerical methods.

Contextual Notes

Participants express uncertainty about the feasibility of an analytical solution given the complexity of the integral.

Who May Find This Useful

Readers interested in integral calculus, numerical methods, or the application of Bessel functions may find this discussion relevant.

kprokopi
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I am trying to calculate (analytically) the integral:
[itex]\int_{0}^{\pi} \left [ \frac{ \sin( \frac{k_0 W \cos \theta}{2})}{\cos \theta} \right]^2 J_{0}(k_0 L \sin \theta ) \sin^3 (\theta ) d \theta[/itex]
where [itex]k_0, W, L[/itex] are constants and [itex]J_0[/itex] is the Bessel function of the first kind of order zero.

Hint: Maybe we can use sine integrals [itex]Si(x)=\int_{0}^{x} \frac{\sin(\tau)}{\tau} d \tau[/itex].

Thanks in advance,
kprokopi
 
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Eeh, you don't happen to be a masochist or something (:wink:)??

Use Mathematica and see what it spits out.
 
That looks tricky.
Can't you cheat and use the trapezium rule with a large number of intervals? -_-;;
 
Use Mathematica and see what it spits out.

Just try typing that monster into mathematica :smile:
 

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