2/(13)+2/(35)+2/(57)......+2/(4749)=

来源：百度知道编辑：UC知道时间：2024/06/08 03:56:20

2/(1*3)+2/(3*5)+2/(5*7)......+2/(47*49)=

For i = 1 To 47 Step 2
temp = temp + 2 / (i * (i + 2))
Next i

~
0.666666666666667
0.8
0.857142857142857
0.888888888888889
0.909090909090909
0.923076923076923
0.933333333333333
0.941176470588235
0.947368421052631
0.952380952380952
0.956521739130435
0.96
0.962962962962963
0.96551724137931
0.967741935483871
0.96969696969697
0.971428571428571
0.972972972972973
0.974358974358974
0.975609756097561
0.976744186046511
0.977777777777778
0.978723404255319
0.979591836734694
```````````````````````````````
不精确的答案～

0.979591837

3/2=2+1/1*2=1/1+1/2 1+1/(1+2)+1/(1+2+3)+...+1/(1+2+3+...+100) 1+1/(1+2)+1/(1+2+3)+-------+1/(1+2+3+----+100) 2/3,1/2,2/5,1/3,2/7 （）？ 1/1+2 + 1/1+2+3 +....+ 1/1+2+3+....+100= 2 1 3/2 2/1 ?. (1-1/2^2)*(1-1/3^2)*(1-1/4^2).......(1-1/100^2) 1/2 1/6 1/3 2 ( ) 3 1/2 数字推理 1*2=1/3*1*2*3, 1*2+2*3=1/3*2*3*4 1+1/1+2+1/1+2+3+...+1/1+2+3...+2000