1/2+1/4+1/8+1/16+......1/123+1/256

日期:2022-04-03 10:46:49 人气:1

1/2+1/4+1/8+1/16+......1/123+1/256

1/2+1/4+1/8+1/16+......1/123+1/256
倒过来,配个1/256

1/256+1/256 +1/128+1/64+...+1/4+1/2
=1/128+1/128+1/64+...+1/4+1/2
    A+
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