搜搜考试网计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
来源：学生作业帮 编辑：搜搜考试网作业帮 分类：数学作业 时间：2024/06/25 01:17:41
计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
设a=1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
2a=1+1/2+1/4+1/8+1/16+1/32+1/64+1/128 (上式乘2）
则
2a-a=a=1+1/2+1/4+1/8+1/16+1/32+1/64+1/128-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256 )
=1+1/2+1/4+1/8+1/16+1/32+1/64+1/128-1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
=1-1/256
=255/256
2a=1+1/2+1/4+1/8+1/16+1/32+1/64+1/128 (上式乘2）
则
2a-a=a=1+1/2+1/4+1/8+1/16+1/32+1/64+1/128-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256 )
=1+1/2+1/4+1/8+1/16+1/32+1/64+1/128-1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
=1-1/256
=255/256
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如何计算1/2+3/4+7/8+15/16+31/32+63/64+127/128怎么简便计算?
64+32+16+8+4+2+1怎么计算
1：计算.2：填一填.
计算：1/2+3/4+7/8+15/16+31/32+63/64+127/128+255/256+511/512【要计算
计算：1/2+1/4+1/8+1/16+1/64+1/128+1/256
简便计算1/2+1/4+1/8+1/16+1/32+1/64+1/128
简便计算的公式1/2+1/4+1/8+1/16+1/32=简便计算啊!
计算1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
计算：1/2+4/1+8/1+16/1+32/1+64/1+128/1+256/1
用EXCEL2003计算1,2,4,8,16,.256的平均值,计算结果保留2位小数