作业帮(-1+1/100)x(-1+1/101)x(-1+1/102)x...x (-1+1/2011)计算!
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(-1+1/100)x(-1+1/101)x(-1+1/102)x...x (-1+1/2011)计算!
(-1+1/100)x(-1+1/101)x(-1+1/102)x...x (-1+1/2011)计算!
(-1+1/100)x(-1+1/101)x(-1+1/102)x...x (-1+1/2011)计算!
=(--9/100)×(-100/101)×……×(-2010/2011)
哟工1912个负号,所以结果是正数
前一个分母和后一个分子约分
=9/2011
1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+...+1/(x+100)(x+101)
x(x-1)(x-2)...(x-99)(x-100)
x/x+(1-x)/x-1/x
x-1分之1+(x-1)(x+2)分之一+……+(x-100)(x-101)分之一
*-----------------------------------------------*| 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
(x+1)(x-1)(x-x+1)(x+x+1)
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
1.1/x|x/(x+1)|
x/x-1[1+(x-1/x)]
1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)=
x-1/x÷(x-1/x)
】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
计算1/X(X+1)+1/(X+1)(X+2)+.+1/(X+99)(X+100)
求(1--1/100)X(1-1/101)X(1--/102)X...X(1-1/2010).