1-1\2-1\4-1\8-1\16-1\32 用简便方法计算
问题描述:
1-1\2-1\4-1\8-1\16-1\32 用简便方法计算
答
美雪0015,你好:
1-1/2-1/4-1/8-1/16-1/32
=1/2-(1/2-1/4)-(1/4-1/8)-(1/8-1/16)-(1/16-1/32)
=1/2-1/2+1/4-1/4+1/8-1/8+1/16-1/16+1/32
=1/32