oo ____ \ ` \ n n \ 4 *x ) ------------ / n _______ / 7 *\/ n + 1 /___, n = 1
Sum((4^n*x^n)/((7^n*sqrt(n + 1))), (n, 1, oo))
oo ____ \ ` \ n -n n \ 4 *7 *x ) --------- / _______ / \/ 1 + n /___, n = 1
Sum(4^n*7^(-n)*x^n/sqrt(1 + n), (n, 1, oo))
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