oo ___ \ ` \ 2 / 2\ / x *log\4 + x / /__, n = 1
Sum(x^2*log(4 + x^2), (n, 1, oo))
2 / 2\ oo*x *log\4 + x /
oo*x^2*log(4 + x^2)
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