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