求级数s=1/(1+1)+2/(1+2*2)+3/(1+3*3)+……n/(1+n*n)的前250项之和(取2位小数,第第三位小数四舍五入

Question

求级数s=1/(1+1)+2/(1+2*2)+3/(1+3*3)+……n/(1+n*n)的前250项之和(取2位小数,第
第三位小数四舍五入

Answer 1

7.求级数s=1/(1+1)+2/(1+2*2)+3/(1+3*3)+-------+n/(1+n*n)+-------的前200项之和（取一位小数,第二位小数四舍五入）
编写程序代码
Private Sub Form_Click()
Dim n As Integer
Dim s As Single
n = 1: s = 0
Do While n