Mathematics
Senior High
階差数列の一般項の公式とこの問題教えてください
1 階差数列を利用して次の数列について問いに答えよ。
3,7, 15, 27, 43,
43,○
4812 16 20 24
(1)第6項と第7項を求めよ
ab
=
63
a=
Q-87
(2) 一般項 α を求めよ
an:4a
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