oo ____ \ ` \ n - 1 \ x / ------ / n + 1 /___, n = 1
Sum(x^(n - 1)/(n + 1), (n, 1, oo))
/ 1 log(1 - x) |- - - ---------- for And(x >= -1, x < 1) | x 2 | x | | oo | ____ < \ ` | \ n | \ x | / ------- otherwise | / x + n*x | /___, | n = 1 \
Piecewise((-1/x - log(1 - x)/x^2, (x >= -1)∧(x < 1)), (Sum(x^n/(x + n*x), (n, 1, oo)), True))
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