Mathematics
Senior High
Solved
第2弾です!誰かお願いします!
練習
33
恒等式
S=
(2k-1)(2k+1)=²(2k-12k²+1)
1
1.3
+
1
+
3・5
1
+
5.7
+
1
(2n-1)(2n+1)
を利用して, 和
を求めよ。
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和の公式がわからないです💦