Give combinatorics proof of the identity – math.stackexchange.com

Give combinatorics proof of the identity – math.stackexchange.com

20:36 No Comments
Give a combinatorial proof of the identity (no points for a purely algebraic or induction proof): $$\sum_{k=1}^n k \binom{n}{k}^2 = {n}\binom{2n-1}{n-1}$$ I am not exactly sure where to start. Since ...

from Hot Questions - Stack Exchange OnStackOverflow
via Blogspot

Share this

Unknown

Artikel Terkait

0 Comment to "Give combinatorics proof of the identity – math.stackexchange.com"

Post a Comment

Subscribe to: Post Comments (Atom)