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Clearnote
Q&A
Senior High
Mathematics
おしえてください🙏🙏
Mathematics
Senior High
over 5 yearsago
えりざべす
おしえてください🙏🙏
(2) |x|<1 のとき,無限級数 2 nx"=x+2x°+3x°+ ………の和を求め n=1 よ。 ただし,|x|<1 のとき limnx"=0 は用いてよい。 n→0 3,803 (全0n十iaー
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