10 ____ \ ` \ n - 1 n n \ n*x - 10*x + n*x ) ----------------------- / n / (1 - x) /___, n = 2
Sum((n*x^(n - 1) - 10*x^n + n*x^n)/(1 - x)^n, (n, 2, 10))
9 8 8 7 7 6 6 5 5 4 4 3 3 2 2 9 - x + 9*x - 2*x + 8*x - 3*x + 7*x - 4*x + 6*x - 5*x + 5*x - 6*x + 4*x - 7*x + 3*x - 8*x + 2*x 10*x ----------- + ------------- + ------------- + ------------- + ------------- + ------------- + ------------- + ------------ + --------- 9 8 7 6 5 4 3 2 10 (1 - x) (1 - x) (1 - x) (1 - x) (1 - x) (1 - x) (1 - x) (1 - x) (1 - x)
(-x^9 + 9*x^8)/(1 - x)^9 + (-2*x^8 + 8*x^7)/(1 - x)^8 + (-3*x^7 + 7*x^6)/(1 - x)^7 + (-4*x^6 + 6*x^5)/(1 - x)^6 + (-5*x^5 + 5*x^4)/(1 - x)^5 + (-6*x^4 + 4*x^3)/(1 - x)^4 + (-7*x^3 + 3*x^2)/(1 - x)^3 + (-8*x^2 + 2*x)/(1 - x)^2 + 10*x^9/(1 - x)^10
x^n/n
(x-1)^n
1/2^(n!)
n^2/n!
x^n/n!
k!/(n!*(n+k)!)
csc(n)^2/n^3
1/n^2
1/n^4
1/n^6
1/n
(-1)^n
(-1)^(n + 1)/n
(n + 2)*(-1)^(n - 1)
(3*n - 1)/(-5)^n
(-1)^(n - 1)*n/(6*n - 5)
(-1)^(n + 1)/n*x^n
(3*n - 1)/(-5)^n