Friday, 4 October 2013

limits - Find the value of the series sumlimitsin=1nftyfracn2n

Find the value of the series n=1n2n



The series on expanding is coming as 12+222+..



I tried using the form of (1+x)n=1+nx+n(n1)2x2+.. and then differentiating it but still it is not coming .What shall I do with this?

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