1 1 1 1 1(1- -)(1- -)(1- -)...(1- - )(1- - )=?2 3 4 2007 200
1 1 1 1 1(1- -)(1- -)(1- -)...(1- - )(1- - )=?2 3 4 2007 200
200*(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/100)
(1/2008-1)(1/2007-1)(1/2006-1)…(1/3-1)(1/2-1)
(1-1/2^)(1-1/3^)……(1-1/2007^)(1-1/2008^)
2007*(1-1/2)*(1-1/3)*(1-1/4).(1-1/2007)=?
(1-1/2)*(1-1/3)*(1-1/4)*(1-1/5)*(1-1/6)*…*(1-1/19)*(1-1/20)=
计算;(1/2008-1)(1/2007-1)(1/2006-1).(1/3-1)(1/2-1)=
1/1×2+1/1-1/2:;1/2×4=1/2×(1/2-1/4);1/58×=1/3(×1/5-1/8)
找规律填数. 1 1+1 1+2+1 1+3+3+1 1+4+6+4+1 1+( )+( )+( )+( )+1=( )
计算 ( 1+1/2)*(1-1/3)*(1+1/4)*(1-1/5)*.*(1+1/1000)*(1-1/1001)
(1+1/2)*(1+1/4)*(1+1/6)*...*(1+1/2008)*(1-1/3)*(1-1/5)*(1-1/
(1+1/2)*(1+1/4)*.(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)=?请写出过程和道理