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Do you have any idea to solve this integral?

\int^{\phi_{1}}_{\phi_{2}} exp[j cos(x)] dx

where \phi_{1} and \phi_{2} are an arbitrary angles. If \phi_{1}=\pi and \phi_{2}=0, the answer for this integral is a Bessel function.

Thanks,

Viet.

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# How to solve this Bessel integral?

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