1/(1×3)+1/(3×5)+1/(5×7).+1/(97×99)+1/(99×101)
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)
问个数学题: 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
1/(1*3)+1/(3*5)+1/(5*7)+...+1/(97*99)+1/(99*101)谁帮忙解一下!
1/1*3+1/3*5+.+1/97*99+1/99*101=?
2/1*3+2/3*5+2/5*7+.+2/97*99=2/99*101
1-3+5-7+9.+97-99
-1-3-5-7-9-...-97-99
-1+3-5+7-9.-97+99
计算1-3+5-7+...+97-99
1/1*3+1/3*5+1/5*7+...+1/95*97+1/97*99