1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/30=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 18:54:59
1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/30=?
1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/
1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/30=?
1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/1-1/2-1/4-1/8-1/16-1/32=?1/2+1/6+1/12+1/20+1/30=?
=1-(16/32+8/32+4/32+2/32+1/32) 2. =1/(1x2)+1/(2x3)+1/(3x4)+1/(4x5)+1/(5x6)
=1-30/32 =1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6
=1/16 =1-1/6
=5/6
大概就是这样了