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Question Number 30424 by abdo imad last updated on 22/Feb/18

find   Σ_(n=0) ^∞     (x^n /(3n+2))   for  ∣x∣<1  then find   Σ_(n=0) ^∞   (((−1)^n )/((3n+2)2^n )) .

$${find}\:\:\:\sum_{{n}=\mathrm{0}} ^{\infty} \:\:\:\:\frac{{x}^{{n}} }{\mathrm{3}{n}+\mathrm{2}}\:\:\:{for}\:\:\mid{x}\mid<\mathrm{1}\:\:{then}\:{find}\: \\ $$ $$\sum_{{n}=\mathrm{0}} ^{\infty} \:\:\frac{\left(−\mathrm{1}\right)^{{n}} }{\left(\mathrm{3}{n}+\mathrm{2}\right)\mathrm{2}^{{n}} }\:. \\ $$

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