I need help to solve this integral, please. $$\int_0^{\pi/2}{\cos^x(\theta)\cos(y\theta)d\theta}$$
Thank you!
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Are $x$ and $y$ supposed to be integers ? If not, I am afraid that you could fac gaussian hypergeometric functions. – Claude Leibovici Dec 10 '21 at 04:53
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2https://math.stackexchange.com/questions/3419834/integrals-related-to-the-reciprocal-beta-function?noredirect=1 – Svyatoslav Dec 10 '21 at 05:20