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let-u-n-1-2n-1-1-2n-3-1-4n-1-calculate-lim-n-u-n-




Question Number 36930 by maxmathsup by imad last updated on 07/Jun/18
let u_n = (1/(2n+1)) +(1/(2n+3)) +.....+(1/(4nāˆ’1))  calculate lim_(nā†’+āˆž)  u_n .
$${let}\:{u}_{{n}} =\:\frac{\mathrm{1}}{\mathrm{2}{n}+\mathrm{1}}\:+\frac{\mathrm{1}}{\mathrm{2}{n}+\mathrm{3}}\:+…..+\frac{\mathrm{1}}{\mathrm{4}{n}āˆ’\mathrm{1}} \\ $$$${calculate}\:{lim}_{{n}\rightarrow+\infty} \:{u}_{{n}} . \\ $$

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