oo ____ \ ` \ / 8 \ / 10 \ \ sin|------|*cos|------| / | n + 1| | n + 1| / \9 / \9 / /___, n = 1
Sum(sin(8/9^(n + 1))*cos(10/9^(n + 1)), (n, 1, oo))
oo ___ \ ` \ / -1 - n\ / -1 - n\ / cos\10*9 /*sin\8*9 / /__, n = 1
Sum(cos(10*9^(-1 - n))*sin(8*9^(-1 - n)), (n, 1, oo))
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