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Question Number 34632 by math khazana by abdo last updated on 09/May/18
$${let}\:{z}\in{C}\:\:{developp}\:{at}\:{integrserie} \\ $$ $${f}\left({z}\right)={ln}\left(\mathrm{1}+{z}\right)\:\:{with}\:\mid{z}\mid<\mathrm{1}\:. \\ $$ $$\left.\mathrm{2}\right)\:{give}\:{ln}\left(\mathrm{2}+{i}\right)\:{at}\:{form}\:{of}\:{serie}. \\ $$