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calculate-0-1-cos-3arctanx-dx-




Question Number 66793 by mathmax by abdo last updated on 19/Aug/19
calculate ∫_0 ^1  cos(3arctanx)dx
$${calculate}\:\int_{\mathrm{0}} ^{\mathrm{1}} \:{cos}\left(\mathrm{3}{arctanx}\right){dx} \\ $$

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