1/2+3/4+7/8+15/16+31/32+63/64
=1-1/2+1-1/4+1-1/8+1-1/16+1-1/32+1-1/64
=6-﹙1/2+1/4+1/8+1/16+1/32+1/64﹚
=6-63/64
=5又1/64.
2/1+4/3+7/8+16/15+32/31+64/63
2/1+4/3+7/8+16/15+32/31+64/63
必須簡(jiǎn)便計(jì)算
必須簡(jiǎn)便計(jì)算
數(shù)學(xué)人氣:262 ℃時(shí)間:2020-01-26 01:27:24
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