Question Number 33294 by abdo imad last updated on 14/Apr/18
$${developp}\:{f}\left({x}\right)=\:{xln}\left(\:\mathrm{1}+{e}^{−{x}} \right)\:\:{at}\:{inter}\:{srie} \\ $$$$\left.\mathrm{2}\right)\:{find}\:\:\int_{\mathrm{0}} ^{\mathrm{1}} \:{f}\left({x}\right){dx}\:. \\ $$