作业帮1/1×2+1/2×3+1/3×4+∧+1/1999×2000等于?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/16 01:36:11
1/1×2+1/2×3+1/3×4+∧+1/1999×2000等于?
1/1×2+1/2×3+1/3×4+∧+1/1999×2000等于?
1/1×2+1/2×3+1/3×4+∧+1/1999×2000等于?
1/1×2+1/2×3+1/3×4+.+1/1999×2000
=1/1-1/2+1/2-1/3+1/3-1/4+.+1/1999-1/2000
=1-1/2000
=1999/2000
