11X2+12X3+13X4+14X5.+12009X2010
=1-1/2+1/2-1/3+……+1/2009-1/2010
=1-1/2010
=2009/2010
求1\1X2+1\2X3+1\3X4+1\4X5.+1\2009X2010的值,请帮我解答,
4个回答
相关问题
-
1/1x2+1/2x3+1/3x4+1/4x5+...+1/2009x2010
-
1/1x2+1/2x3+1/3x4+.1/2009x2010
-
计算:1/1x2+1/2X3+1/3x4+...+1/2009x2010
-
当x=-5/3时,求（1-x)^2-4(1-x^2)+4(1+x)^2 求各位大哥大姐帮我解答,
-
计算1/1x2+1/2x3+1/3x4+…+1/2009x2010的值,提示：1/1x2=1-1/2,1/2x3=1/2
-
急求高手解答1/1x2+1/2x3+1/3x4+1/4x5+.+1/2007x2008+1/2008x2009帮忙列出每
-
X/1*2+X/2*3+X/3*4+.+X/2009*2010=2009 X=?
-
1/1x2+1/2x3+1/3x4+1/4x5+1/5x6+......1/2008x2009
-
2010x/1+2 + 2010x/ 1+2+3 + 2010x/1+2+3+4 + 2010x/1+2+.2010=2
-
谁来帮我解一下方程1/5(x+15)=1/2-1/3(x-7) 1/4(1-3/2x)-1/3（2-x/4）=2 5x+