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Question Number 53960 by maxmathsup by imad last updated on 27/Jan/19
$${let}\:{f}\left({x}\right)\:={arctan}\left({x}^{\mathrm{2}} \right)\:{developp}\:{f}\:{at}\:{i}\:{serie}. \\ $$$${the}\:{Q}\:.\:{is}\:{developp}\:{f}\:{at}\:{integr}\:{serie}. \\ $$