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:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/21 06:40:46
1/2+1/4+1/8+1/31+1/62+1/124+1/248+1/496
用小学的代换法(1/2是二分之一)
用小学的代换法(1/2是二分之一)
![1/2+1/4+1/8+1/31+1/62+1/124+1/248+1/496](/uploads/image/z/19744739-35-9.jpg?t=1%2F2%2B1%2F4%2B1%2F8%2B1%2F31%2B1%2F62%2B1%2F124%2B1%2F248%2B1%2F496)
1/2+1/4+1/8+1/31+1/62+1/124+1/248+1/496
=1-1/2+1/2-1/4+1/4-1/8+1/31+1/31-1/62+1/62-1/124+1/124-1/248+1/248-1/496
=1-1/8+2/31-1/496
=7/8+31/496
=7/8+1/16
=15/16
=1-1/2+1/2-1/4+1/4-1/8+1/31+1/31-1/62+1/62-1/124+1/124-1/248+1/248-1/496
=1-1/8+2/31-1/496
=7/8+31/496
=7/8+1/16
=15/16
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
数学题;1-1/2-1/4-1/8-...-1/128
1/2+1/4+1/8+1/16+...+1/1024
1/2+1/4+1/8+1/16+1/32+.
(1+1/2)*(1+1/4)*(1+1/6)*(1+1/8)*(1+1/3)*(1+1/5)*(1+1/7)*(1+1
[(1+29)*(1+29/2)*...*(1+29/30)*(1+29/31)]/[(1+31)*(1+31/2)*(
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256