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Question Number 39380 by maxmathsup by imad last updated on 05/Jul/18
find the value of Σ_(n=0) ^∞    (((−1)^n )/(4n+1))
$${find}\:{the}\:{value}\:{of}\:\sum_{{n}=\mathrm{0}} ^{\infty} \:\:\:\frac{\left(−\mathrm{1}\right)^{{n}} }{\mathrm{4}{n}+\mathrm{1}} \\ $$

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