1/2+1/4+1/8+1/31+1/62+1/124+1/248+1/496=
来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/05/17 02:55:03
1/2+1/4+1/8+1/31+1/62+1/124+1/248+1/496=
原式=1/2+1/4+1/8+1/31+1/(31*2)+1/(31*4)+1/(31*8)+1/496
=1/2*(1+1/31)+1/4*(1+1/31)+1/8*(1+1/31)+1/31+1/496
=1/2*(32/31)+1/4*(32/31)+1/8*(32/31)+1/31+1/496
=16/31+8/31+4/31+1/31+1/496
=(16+8+4+1)/31+1/496
=29/31+1/496
=29*16/31*16+1/31*16
=(29*16+1)/496
=(30*16-15)/496
=465/496
=1/2*(1+1/31)+1/4*(1+1/31)+1/8*(1+1/31)+1/31+1/496
=1/2*(32/31)+1/4*(32/31)+1/8*(32/31)+1/31+1/496
=16/31+8/31+4/31+1/31+1/496
=(16+8+4+1)/31+1/496
=29/31+1/496
=29*16/31*16+1/31*16
=(29*16+1)/496
=(30*16-15)/496
=465/496
怎样计算下列各题~①1/2+1/4+1/6+1/31+1/62+1/124+1/248+1/496②1/42+5/42+
2分之1+4分之1+8分之1+16分之1+31分之1+62分之1+
124*124/(123+1)+1
1/2+1/4+1/8+1/16+1/32+1/62+1/128+1/256,什么规律
1+2+3+4+6+8+51+248+5586
1/1×2+1/1-1/2:;1/2×4=1/2×(1/2-1/4);1/58×=1/3(×1/5-1/8)
(1+1/2)(1+1/2^2)(1+1/2^4)(1+1/2^8)+1/2^15=?
【数学】算一算,找规律.1/2+1/4+1/8= 1/2+1/4+1/8+1/16= 1/2+1/4+1/8+1/16+
求和:1/2+1/4+1/8+1/16+1/32+1/64+.+1/1024=?
1-2/1-4/1-8/1-16/1-32/1-64/1=多少?
1-2/1-4/1-8/1-16/1-32/1-64/1=?简便计算
2*4/1+4*6/1+6*8/1+...+198*200/1=?1 1 1 1 / + / + / .+ / = 2乘