计算x^3n/(x^2-1)-x^2n/(x^n+1)-1/(x^n-1)+1/(x^n+1)

计算(x^(2n)+x^n+1)(x^(3n)-x^(2n)+1) 计算：（x^3)^n÷x^2n÷x^n-1 计算:1/(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+.+1/(x-n)(x-n-1) 计算x^3n/(x^2-1)-x^2n/(x^n+1)-1/(x^n-1)+1/(x^n+1) 计算x^n·x^n+1+x^n+1·x^n+2+(-x)^3·(-x)^2n-4急在线等速度Rt 计算【-2（-x^n-1）】^3 x^n*x^n+1*(-x)^2n*x+(-x)^2n+3x^2n-2*x 计算(-x)^2n十1.(-x)^n+1 (-x)^3x^n-1+x^2n(-x)^3 利用1/n*(n+1) = 1/n - 1/(n+1)计算1/（x-2)（x-3)-2/(x-1)(x-3)+1/(x-1)(x-2) 利用1/n*(n+1) = 1/n - 1/(n+1)计算1/（x-2)（x-3)-2/(x-1)(x-3)+1/(x-1)(x-2) x^(n)*x^(n+1)+x^(2n)*x 计算 (x+2)²-(x-1)(x+2) （m-2n+3)（m+2n-3) 极限计算 2n-3n/2n+1+3n+1 n趋于正无穷大 (n n＋1为次方) x-sinx/x+sinx x趋于正无穷大 ...极限计算 2n-3n/2n+1+3n+1 n趋于正无穷大 (n n＋1为次方) x-sinx/x+sinx x趋于正无穷大 但是极限计算 计算:(2x^3n)(2x^n)^3=2x^6n 已知n为正整数,计算x×（-x）^2n+(-x)^2n+1 要过程 (4x^n-2x^n-1-3x^n+2)÷（-5x^n-1) x^n-1(3x^n+4x^n+1-5x^n+2)