1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/22 22:12:52
1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)1/(x-1)+1/(x-1
1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)
1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)
1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)
利用：1/(x-(n+1))- 1/(x-n)=1/(x-n)(x-(n+1)) 来解
如：1/(x-2)- 1/(x-1)=1/(x-1)(x-2)
所以：1/(x-1)+1/(x-1)(x-2)+...+1/(x-2010)(x-2011)
=1/(x-1)+ 1/(x-2)- 1/(x-1)+……+1/(x-2011)- 1/(x-2010)
=1/(x-2011)
原题变形为：1/（x-1）+1/(x-2)-1/(x+1)+...+1/(x-2011)-1/(x-2010)=1/(x-2011)
1/(x-2011)
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X.
分解因式----（X*X-X)(X*X-X-2)+1
】x(x+1)+x^2(x-1)
1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做
x/x+(1-x)/x-1/x
x-1/x-2
{2X+1}+{X}
(x^2-1)/x
x^2-1/x
2X+|X+1|
｜x-1｜+｜x-2｜
(x+1)/(x+2)
/X+1/+/X+2/
2x/(1-x)
|X+2|+|X-1|
2x-1 (x