(1-1/2)X(1-1/3)X(1-1/4)X(1-1/5)X.X(1-1/2005)X(1-1/2006)
2个回答
=1/2*2/3*3/4*.2004/2005*2005/2006
=1/2006
相关问题
1x1/2 2x1/3 3x1/4 ……2005x1/2006 2006x1/2007
1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+...1/(x+2005)(x+2006)
化简1/(x+1)(x+2)+1/(x+3)(x+4)+……1/(x+2005)(x+2006)=
解方程1/(x+1)(x+2)+1/(x+2)(x+3)+.+1/(x+2005)(x+2006)=1/2x+4012
1除以(X+1)X+2)+1除以(X+3)(X+4)...1除以(X+2005)(X+2006)等于几?
请教一道小学数学题,1/1x2+1/2x3+1/3x4+1/4x5+.1/2005x2006怎么算?说明思路.谢谢!
(1/2006-1)x(1/2005-1)x……(1/2-1)等于多少
1x1/2+2x1/3+3x1/4+.2004x1/2005=?
1x2/1+2x3/1+3x4/1.2004x2005/1
1/x-1+1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)+1/(x-4)(x-5)