Mathematics
Senior High
なんで等比数列の公式になりますか?
52 次の和を求めよ。
(1)
k=1
52 (1) 2k
(2)第ん項は3
6
k=1
-=
2(26-1)
2-136
23
k=1 = w
=126
Jed
1\5
1-
5
1k-1
P
361
61
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