Hi everyone, my friend challenged me to solve this definite integral...integral from -2pi to 2pi ((sin(2sinx)+cos(2cosx))dx, i proved by using definite integral properties that this integral equals to integral from -2pi to 2pi cos(2cosx)dx, can you give me any ideas how to solve this?? I know that i can use the contour integration but how??(adsbygoogle = window.adsbygoogle || []).push({});

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# A Integral of cos(2cosx)dx

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