作业帮奥数1/2x1/3x1/4+1/3x1/4x1/5+……+1/8x1/9x1/10
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/28 09:13:52
x){t鳩 * DJe@ r-&H ]v6Tc Rm
2uAZM5:A`Q+ M-
\s x1/6.|8 <;lg_n|i'6
MH 0Ly
奥数1/2x1/3x1/4+1/3x1/4x1/5+……+1/8x1/9x1/10
奥数1/2x1/3x1/4+1/3x1/4x1/5+……+1/8x1/9x1/10
奥数1/2x1/3x1/4+1/3x1/4x1/5+……+1/8x1/9x1/10
1/2(1/2x3-1/3x4)+1/2(1/3x4-1/4x5)+……+1/2(1/8x9-1/9x10)=
1/2(1/2x3-1/9x10)=
1/2x14/90=
7/90
我对象做的,
打酱油
。