oo ____ \ ` \ n \ 2 ) -- / n / x /___, n = 0
Sum(2^n/x^n, (n, 0, oo))
/ 1 2 | ----- for --- < 1 | 2 |x| | 1 - - | x | < oo | ___ | \ ` | \ n -n | / 2 *x otherwise | /__, \n = 0
Piecewise((1/(1 - 2/x), 2/|x| < 1), (Sum(2^n*x^(-n), (n, 0, 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