1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 23:13:32
![1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)](/uploads/image/z/100755-27-5.jpg?t=1%2F%281%C3%973%29%2B1%2F%283%C3%975%29%2B1%2F%285%C3%977%29.%2B1%2F%2897%C3%9799%29%2B1%2F%2899%C3%97101%29)
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1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)
1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)
1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)
1/1×3+1/3×5+1/5×7+.+1/99×101
=(2/1×3+2/3×5+2/5×7+.+2/99×101)/2
=[(1/1-1/3)+(1/3-1/5)+(1/5-1/7)+……+(1/99-1/101)]/2
=(1-1/101)/2
=50/101
化简1/3:1/5
1+1+5+25+3
1/3+1/5是什么意思?
1+1+2+3*5
(1+1/3+1/5+1/7)*(1/3+1/5+1/7+1/9)-(1+1/3+1/5+1/7+1/9)*(1/3+1/5+1/7) 简算(1+1/3+1/5+1/7)*(1/3+1/5+1/7+1/9)-(1+1/3+1/5+1/7+1/9)*(1/3+1/5+1/7) 简便计算
1+1+1+1+1-5+5-5+1+1-2+3+3+3+3-6-3-3等于多少?
5(X-3)+1
1+3+5+.+99
1 3 5题,
1、2、3、5,
1,3,5题
1-3+5-7+...
1,3、5题
1+3+5+...+2011
1,3,5题,
3 1 5是什么意思?
1/1*3+1/1*3*5+1/1*3*5*7+1/1*3*5*7*9-73/945
3/1:4/1:5/1化简是?