Tinh S(n) = 1+2+3+.....+n

Lafi asked Oct 12, 2022

47,901 views

37 votes

Lafi asked Oct 12, 2022

by Lafi

3.0k points

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

14 votes

Answer:

-1/12

Step-by-step explanation:

$\sum_(k=0)^(k=n) k = (n(n+1))/(2)\\$

look up the derivation by Srinivasa Ramanujan for a formal proof.

PiyushMishra answered Oct 18, 2022

2.6k points

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers