Mathematics
Senior High
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1
1
30 恒等式
=
(2k-1)(2k+1)
2
½ (24-1-2k+
1
1)
を利用して,次の和Sを求めよ。
S=1-3 +3.5 +5.7
1
1
1
+
+
(2n-1)(2n+1)
1
Answers
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