ページ1:

Telescoping Sum
ak
=
f(k + 1) − f(k)
n
(1) Σ
k=1
n
(2) Σ
n
(3) Σ
(4)
()
k=1
n
k=1
1
k(k+1)
1
√√k+1+√√k
k
(k + 1)!
sin k sin 1
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