Sunday, July 10, 2016

Sequence sum question: $sum_{n=0}^{infty}nk^n$

I am very confused about how to compute $$\sum_{n=0}^{\infty}nk^n.$$


Can anybody help me?

-

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

analysis - Injection, making bijection

I have injection $f \colon A \rightarrow B$ and I want to get bijection. Can I just resting codomain to $f(A)$? I know that every function i...