2/2x4+2/4x6+2/6x8.2/8x10+2/10x2
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 05:47:49
2/2x4+2/4x6+2/6x8.2/8x10+2/10x22/2x4+2/4x6+2/6x8.2/8x10+2/10x22/2x4+2/4x6+2/6x8.2/8x10+2/10x22/2x4+2
2/2x4+2/4x6+2/6x8.2/8x10+2/10x2
2/2x4+2/4x6+2/6x8.2/8x10+2/10x2
2/2x4+2/4x6+2/6x8.2/8x10+2/10x2
2/2x4+2/4x6+2/6x8.2/8x10+2/10x2
=1/2-1/4+1/4-1/6……+1/8-1/10+1/10
=1/2