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Question Number 34679 by math khazana by abdo last updated on 09/May/18
$${let}\:{f}\left({x}\right)\:=\:\:\frac{{x}}{\mathrm{4}{x}^{\mathrm{2}} \:−\mathrm{1}} \\ $$$$\left.\mathrm{1}\right)\:{find}\:{f}^{\left({n}\right)} \left({x}\right)\:{and}\:\:{f}^{\left({n}\right)} \left(\mathrm{0}\right) \\ $$$$\left.\mathrm{2}\right)\:{developp}\:{f}\:{at}\:{ontegr}\:{serie}\:. \\ $$