I'm trying to solve a special integral.(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \int{\frac{1}{1+[Tan(x)]^a}}dx [/tex]

So far i've tried constructing a function F(a) and differentitating to show that it is a 0, hence any a would result in the same answer. Thus chose a = 2, and solve it quite easily. Although, all my arguments rely on symmetry, just wondering if it is possible to solve without symmetry.

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# Any ideas

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