1-1/2+1/3-1/4+1/5-1/6…+1/99-1/100)/(1/51+1/52+1/53+…+1/99+1/100)=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 00:36:56
![1-1/2+1/3-1/4+1/5-1/6…+1/99-1/100)/(1/51+1/52+1/53+…+1/99+1/100)=?](/uploads/image/z/129103-7-3.jpg?t=1-1%2F2%2B1%2F3-1%2F4%2B1%2F5-1%2F6%E2%80%A6%2B1%2F99-1%2F100%EF%BC%89%2F%EF%BC%881%2F51%2B1%2F52%2B1%2F53%2B%E2%80%A6%2B1%2F99%2B1%2F100%EF%BC%89%3D%3F)
1-1/2+1/3-1/4+1/5-1/6…+1/99-1/100)/(1/51+1/52+1/53+…+1/99+1/100)=?
1-1/2+1/3-1/4+1/5-1/6…+1/99-1/100)/(1/51+1/52+1/53+…+1/99+1/100)=?
1-1/2+1/3-1/4+1/5-1/6…+1/99-1/100)/(1/51+1/52+1/53+…+1/99+1/100)=?
(1-1/2+1/3-1/4..-1/100) =(1+1/2+1/3+1/4..+1/100)-2*(1/2+1/4+1/6+..1/100) =(1+1/2+1/3+1/4...+1/100)-(1+1/2+1/3+1/4+..1/50) =1/51+1/52+1/53..+1/100 所以你的答案是1,懂了吗?