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find-0-pi-2-cos-2-ln-tan-d-




Question Number 31059 by abdo imad last updated on 02/Mar/18
find  ∫_0 ^(π/2)  cos(2θ)ln(tanθ)dθ.
$${find}\:\:\int_{\mathrm{0}} ^{\frac{\pi}{\mathrm{2}}} \:{cos}\left(\mathrm{2}\theta\right){ln}\left({tan}\theta\right){d}\theta. \\ $$

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