作业帮1/2+1/4+1/8+1/16+……1/128=?
来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/07/05 09:31:29
1/2+1/4+1/8+1/16+……1/128=?
要简便算法
要简便算法
必须根据小学的理解力来解题,高等方法不被接受
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+1/128)-1/128
=(1/2+1/4+1/8+1/16+1/32+1/64+1/64)-1/128
=(1/2+1/4+1/8+1/16+1/32+1/32)-1/128
=(1/2+1/4+1/8+1/16+1/16)-1/128
=(1/2+1/4+1/8+1/8)-1/128
=(1/2+1/4+1/4)-1/128
=(1/2+1/2)-1/128
=1-1/128
=127/128
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+1/128)-1/128
=(1/2+1/4+1/8+1/16+1/32+1/64+1/64)-1/128
=(1/2+1/4+1/8+1/16+1/32+1/32)-1/128
=(1/2+1/4+1/8+1/16+1/16)-1/128
=(1/2+1/4+1/8+1/8)-1/128
=(1/2+1/4+1/4)-1/128
=(1/2+1/2)-1/128
=1-1/128
=127/128
1/2+1/4+1/8+1/16+……+1/128+1/256=?
1/2+1/4+1/8+1/16+……1/128=?
1-1/2-1/4-1/8-……-1/128=?用简便方法计算
1+2+4+8+16+32+64+128+256……加64次等于几 1+2+4+8+16+32+64+128+256……
2/1+4/1+8/1+16/1+32/1……+1024/1=
计算:1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+……+1/2^n
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256……+1/2^n
【数学】计算1-1/2-1/4-1/8-…-1/64-1/128-1/256.
2/1+4/1+8/1+16/1+……+256/1=( )
1/2+1/4+1/8+1/16+……+1/256=（ ）
1/2+1/4+1/8+1/16……+1/512=(),等于多少啊,
1+2+4+8+16+32+64+128+……2的n次方等于多少?