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Question Number 36933 by maxmathsup by imad last updated on 07/Jun/18 | ||
$${find}\:{lim}_{{n}\rightarrow+\infty} \:\sum_{{i}=\mathrm{1}} ^{{n}} \:\sum_{{j}=\mathrm{1}} ^{{n}} \:\:\frac{\left(−\mathrm{1}\right)^{{i}+{j}} }{{i}+{j}}\:. \\ $$ | ||