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Question Number 45972 by maxmathsup by imad last updated on 19/Oct/18
find ∫ ch(x)ln(x+(√(x^2 −1)))dx
$${find}\:\:\int\:\:{ch}\left({x}\right){ln}\left({x}+\sqrt{{x}^{\mathrm{2}} −\mathrm{1}}\right){dx} \\ $$

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