1÷(x+1)(x+3)+1÷(x+3)(x+5)+1÷(x+5)(x+7)+1÷(x+7)(x+9)+...+1÷(x

来源：学生作业帮编辑：搜搜考试网作业帮分类：数学作业时间：2024/05/26 05:36:58

1÷(x+1)(x+3)+1÷(x+3)(x+5)+1÷(x+5)(x+7)+1÷(x+7)(x+9)+...+1÷(x+2011)(x+2013）

1÷(x+1)(x+3)+1÷(x+3)(x+5)+1÷(x+5)(x+7)+1÷(x+7)(x+9)+...+1÷(x+2011)(x+2013）
＝1/2*[1/(x+1)-1/(x+3)]+1/2*[1/(x+3)-1/(x+5)]+.+1/2*[1/(x+2011)-1/(x+2013)]
=1/2*[1/(x+1)-1/(x+2013)]
=1/2*[2012/(x+1)(x+2013)]
=1006/[(x+1)(x+2013)]

|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| (（x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4) (x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3 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-2/x-1÷(x+1-3/x-1) (x-1)(x-3)(x-5)(x-7)-9 因式分解已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 x^2-x/x+1÷x/x+1 ；x^2+6x+9/x^2-9÷x+2/x-3；2/a÷4/a y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), x+3/x+1-x+5/x+3-x+7/x+5+x+9/x+7=0