Sum of a power series $n x^n$
6416
How can I evaluate $\sum_{n=0}^\infty(n+1)x^n$?
25370
Power series of a function
29170
Find the sum of the series $\sum \frac{1}{n(n+1)(n+2)}$
137997
Does the series $\sum \frac{x^n}{1+x^n}$ converge uniformly on $x\in [0,1)$?
50050
A formula for the power sums: $1^n+2^n+\dotsc +k^n=\,$?
70677
Finite Sum of Power?
12423
"Closed" form for $\sum \frac{1}{n^n}$
28027
Find $\sum_{k=0}^{n}4^k \binom{n}{k}$
134361
Calculating the sum of a binomial coefficient series
59485
Infinite Series: $\sum_{n=1}^\infty \frac{1}{2^nn}$
140462
Find a closed form for the power series $f_p(x)=\sum\limits_{n=0}^\infty\frac{n^p}{n!}x^n$
53389
Consider the series $ ∑_{n=1}^∞ x^2+ n/n^2$ . Pick out the true statements:
140221
Product of two power series
52241
Calculate sum of series $\sum \frac{n^2}{n!}$
38090
Partial sums of $nx^n$
138456
How to fit $\sum{n^{2}x^{n}}$ into a generating function?
39302
Radius of convergence of a sum of power series