Mathematics
Senior High
恒等式の途中式をお願いします'
練習
35
恒等式
S=
1
(2k-1)(2k+1)
1
1
+
1.3 3.5
+
1
+.
5.7
1 1
22k-1
・+
1
2k+1,
1
(2n-1)(2n+1)
を利用して. 和
を求めよ。
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