x ____ \ ` \ n - 1 \ x ) ------ / n - 1 / 3 /___, n = 1
Sum(x^(n - 1)/3^(n - 1), (n, 1, x))
// x \ || x for - = 1| || 3 | || | || 1 + x | || /x\ x | 3*|<- |-| + - | || \3/ 3 | ||-------------- otherwise| || x | || 1 - - | || 3 | \\ / ------------------------------ x
3*Piecewise((x, x/3 = 1), ((-(x/3)^(1 + x) + x/3)/(1 - x/3), True))/x
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