1*3/1+2*4/1+3*5/1+4*6/1+5*7/1+6*8/1+7*9/1+8*10/1+9*11/1+10*1
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:数学作业 时间:2024/08/19 00:09:50
1*3/1+2*4/1+3*5/1+4*6/1+5*7/1+6*8/1+7*9/1+8*10/1+9*11/1+10*12/1=?
谁回答都可以,尽管不是邦德的!
谁回答都可以,尽管不是邦德的!
![1*3/1+2*4/1+3*5/1+4*6/1+5*7/1+6*8/1+7*9/1+8*10/1+9*11/1+10*1](/uploads/image/z/2457503-71-3.jpg?t=1%2A3%2F1%2B2%2A4%2F1%2B3%2A5%2F1%2B4%2A6%2F1%2B5%2A7%2F1%2B6%2A8%2F1%2B7%2A9%2F1%2B8%2A10%2F1%2B9%2A11%2F1%2B10%2A1)
1*3/1+2*4/1+3*5/1+4*6/1+5*7/1+6*8/1+7*9/1+8*10/1+9*11/1+10*12/1
=(1-1/3 +1/2-1/4 +1/3-1/5+1/4-1/6+1/5-1/7+1/6-1/8+1/7-1/9+1/8-1/10+1/9-1/11+1/10-1/12)/2
=(1+1/2-1/11-1/12)/2
=175/264
=(1-1/3 +1/2-1/4 +1/3-1/5+1/4-1/6+1/5-1/7+1/6-1/8+1/7-1/9+1/8-1/10+1/9-1/11+1/10-1/12)/2
=(1+1/2-1/11-1/12)/2
=175/264
(1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12+1/13+1/14+1/
化简:1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9+1/9*10
1/2×4+1/3×5+1/4×6+1/5×7+……+1/8×10+1/9×11
1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10等于多少?
数列2/1+3/1+4/1+5/1+6/1+7/1+8/1+9/1+10/1+11/1……100/1求和
-1,+1/2,-1/3,+1/4,-1/5,+1/6,-1/7,+1/8,-1/9,+1/10,-1/11,.第30个
1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12的整数部分是几,为啥
4/5+[7/8-4/5] 7/10-[2/15+1/6] 1-1/3-1/7 5/6+11/14 5/6-[4/9-1
1/2*1/3*1/4*1/5*1/6*1/7*1/8*1/9*1/10*1/11的简单算法,着急,
1*3/1+2*4/1+3*5/1+4*6/1+5*7/1+6*8/1+7*9/1+8*10/1+9*11/1+10*1
1/1+(1/1+2)+(1/1+2+3)……+(1/1+2+3+4+5+6+7+8+9+10+11)=
1、2、3、4、5、6、7、8、9、10、