Mathematics
Senior High
Solved
矢印の変形で二乗してあるのにもうひとつの1/4n(n+1)はどこに行ったんですか?
(4)2 (ポ+3k) = 2ピ+3 k
k=1
k=1
k=1
1
n
4
C-S-
ニ
2
JR
n
4
ニ
8)
T+1
ニ
4
Answers
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恐らく分かりました........ありがとうございます!