Mathematics
Senior High
1行目から2行目にいける理由がわかりません！
51 第n 部分和を Sn とする.
(1) Sn =
58
n
log2
k
k + 1
=
n
Σ{log₂ k − log₂ (k + 1)}
k=1
k=1
= -log₂ (n + 1)
(与式) = lim Sn=-∞ 発散
818
log₂ 1 = 0
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