1*1/3+3*1/5+5*1/7+.+99-1/101
1*1/3+3*1/5+5*1/7+.+97*1/99+99*1/101=
1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)
帮帮忙1/1*3+1/3*5+1/5*7+1/7*9+...1/99*101
1/(1+3)+1/(3+5)+1/(5+7)…+1/(99+101)=( )简便计算
1.计算:1/1*3+1/3*5+1/5*7+……+1/99*101
简算1/1*3+1/3*5+1/5*7+...1/99*101
1/1×3+1/3×5+1/5×7+.+1/99×101怎么做
1×(1/3)+3×(1/5)+5×(1/7)+...+99×(1/101)=多少?
简算:1/(1*3)+1/(3*5)+1/(5*7)+……+1/(99*101)=
1/1×3+1/3×5+1/5×7+…+1/99×101 等于多少啊
计算1/(1*3)+1/(3*5)+1/(5*7)+.+1/(99*101)的值
1/1*3+1/3*5+1/5*7+...+1/99*101=?为什么