Mathematics
Senior High

どうやったら、3n+1分のnになりますか?
解き方を教えてくださいm(_ _)m

1 31+1 3n+1
212 (1) S 1 1 3(1 7 3(7 10 1 1 1 3(3n -2 3n+1 1 7 10 1 1 3n-2 3n+1 1 n 3n+1 3n+1 n
次の和Sを求めよ。 1 1 1 1 ) S= 1-4' 4.7' 7.10 10-13 (3n-2(3+1)

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