求解初二下册题：求1/(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)……1/(x+2008)(x+200

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/13 03:27:46

求解初二下册题：求1/(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)……1/(x+2008)(x+2009)的值.

1/(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)……1/(x+2008)(x+2009)
=1/(x+1)+1/(x+1)-1/(x+2)+1/(x+2)-1/(x+3).+1/(x+2008)-1/(x+2009)
=2/(x+1)-1/(x+2009)

求解初二数学下册计算(1-x²/x²+4x+4)÷(x-1)²×（x²+3x+2 已知x^2+x=-1 你能求x^2013+x^2012+x^2011+x^2010+x^2009+…+x^4+x^3+x x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2) 线性代数求行列式 |1 2 x 1| |x 1 x x| |x x 1 x| |x x x 1| x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 化简：1+x+x(1+x)+x(1+x)^2+……+x(1+x)^2006 3x(x^2-2x+1)-2x^2(x-1)求解! 求x/(x+1)(x+2)(x+3)的不定积分 1+x+x^2+x^3+.+x^99+x^100 1X+2X+3X…+98X+99X+100X=50500X X等于多少? 1x+2x+3x+4x+5x+6x+7x…+99x=100