n∑n=1 1/log2n(a) =?
Choose the correct option:
A) n(n + 1)/2 loga2
B) n(n - 1)/2 log2a
C) n(n + 1)2n2/4 loga2
D) n(n + 1)2n2/4 loga3
E) None of these
n∑n=11/log2n(a) = n∑n=1loga(2n)   =n∑n=1nloga2   =n(n + 1)/2 loga2   n(n + 1)/2 loga2NSWER:n(n + 1)/2 loga2
<result>A</result>
n∑n=1 1/log2n(a) =?