oo ____ \ ` \ / 2 \ \ | n n + 2*n + 1 2 | / |(-1) - ------------*n + 6*n + 9| / \ 3 / /___, n = 1
Sum((-1)^n - (n^2 + 2*n + 1)/3*n^2 + 6*n + 9, (n, 1, oo))
oo ____ \ ` \ / / 2 \\ \ | n 2 |1 n 2*n|| / |9 + (-1) + 6*n - n *|- + -- + ---|| / \ \3 3 3 // /___, n = 1
Sum(9 + (-1)^n + 6*n - n^2*(1/3 + n^2/3 + 2*n/3), (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