(1-1/2004)(1-1/2003)(1-2002)...(1-1/3)(1-1/2)=
1/2001*2002+1/2002*2003+1/2003*2004+1/2004*2005+1/2005=?/?
|1/2004-1/2003|+|1/2003-1/2002|+|1/2002-1/2001|+|1/2001-1/20
化简:|1/2004-1/2003|+|1/2003-1/2002|+|1/2002-1/2001|-|1/2001-1
|1/2004-1/2003|+|1/2002-1/2003|+.+|1/2-1|等于多少 |1/2004-1/2003
2003+2002*2004分之2003*2004-1
2002/2002又2002/2003+1/2004
计算:{1\2005-1/2004}+{1/2004-1\2003}+{1/2003-1/2002}+……+{1/3-1
|1/2003—1/2002|+|1/2004—1/2003|—|1/2004—1/2003|
(1/2004 -1)(1/2003 -1)(1/2002 -1).(1/1001 -1)(1/1000 -1)
(根号3+1)^2004-2(根号3+1)^2003-2(根号3+1)^2002+2004
|1\2003-1\2002|-|1\2004-2002|+|1\2004-1\2003| 简便算法
1/2001*2002+1/2002*2003+1/2003*2004+1/2004+2005+1/2005