Saturday, 18 October 2014

calculus - How find this sum of limntoinftysumnk=1left(frac12ksum2k11i=0lnleft(frac2k+2+2i2k+1+2iright)right)

Find the sum of the limit
lim



My try: since
\sum_{i=0}^{2^{k-1}-1}\ln{\left(\dfrac{2^k+2+2i}{2^k+1+2i}\right)}=\sum_{i=0}^{2^{k-1}-1}\left(\ln{(2^k+2+2i)}-\ln{(2^k+1+2i)}\right)



My friend tells me this sum has an analytical solution. But
I can't find it. Thank you.

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