(1/1+101+1/2+102+……+1/50+150)÷(1-1/2+1/3-1/4+……+1/99-1/100)
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/08 11:59:16
(1/1+101+1/2+102+……+1/50+150)÷(1-1/2+1/3-1/4+……+1/99-1/100) /表示分之
1-1/2+1/3-1/4+...+1/99-1/100
=拆
1/(1*2)=1-1/2
1/(2*3)=1/2-1/3
...
每一个都拆开
1-1/2-1/2+1/3-1/3+1/4.-1/99+1/100
=1/100 这是分母的化简值;
分子=1/102+1/104+1/106+.+1/200
=1/2*(1/51+1/52+1/53+.+1/100)
= 1/200
分子/分母=1/2
=拆
1/(1*2)=1-1/2
1/(2*3)=1/2-1/3
...
每一个都拆开
1-1/2-1/2+1/3-1/3+1/4.-1/99+1/100
=1/100 这是分母的化简值;
分子=1/102+1/104+1/106+.+1/200
=1/2*(1/51+1/52+1/53+.+1/100)
= 1/200
分子/分母=1/2
(1/1+101+1/2+102+……+1/50+150)÷(1-1/2+1/3-1/4+……+1/99-1/100)
(1-1/2+1/3-1/4.+1/99-1/100 )÷(1/102+1/104+1/106+……+1/200)
1-1/2+1/3-1/4+1/5-1/6+…+1/99-1/100 1/(101+1)+1/(2+102)+1/(3+
计算(-1+1/100)×(-1+1/101)×(-1+1、102)×……×(-1+1/2008)
1+2+3+4+5+6+7+8+9+…………99+100+101+102+103+104+………200+201+…………
计算:(+1)+(-2)+(+3)+(-4)+……+(+99)+(-100)+(+101).
1-1/2+1/3-1/4+1/5-1/6…+1/99-1/100)/(1/51+1/52+1/53+…+1/99+1/
1/(1+2) + 1/(1+2+3) + 1/(1+2+3+4)……+1/(1+2+3+4+……+99+100)=(
1/1*2+1/2*3+1/3*4+……1/99*100+1/100*101=?坐等,
1/2*1+1*2*3+1/3*4+………+1/99*100
(1/1+2)+(1/1+2+3)+(1/1+2+3+4)+………+(1/1+2+3+………+100)
计算:(1+1/1×3)×(1+1/2×4)×…×(1+1/98×100)×(1+1/99×101)