Mathematics
Undergraduate
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無限級数の問題です！
(2)の問題の解説をお願いします🙇♂️
答えは3/4です！！
2.次の無限級数の和を求めよ。
(1) 7-0.7+0.07-0.007 +0.0007 -
¥1
=i n+.2n
I
15
ニ
ヒント
国+= ()
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ありがとうございます！