Mathematics
Senior High
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ここまで合ってますか？回答が無く困っています…
|(3) a1=2, 2an+1=@»+1 (n=1, 2, 3,…)
d
2d=dtiよりd=1
新化式20m -antlは
anti -1-Qn-l
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ありがとうございました