Tuesday, 8 April 2014

discrete mathematics - Induction problem: a formula for $sum_{i=1}^n i(i+1)$

Find a formula for $\sum_{i=1}^n i(i+1)$ and prove that it holds for all $n \geq$ 1.



For this induction problem I chose $i = n +1$ so we have $(n+1)(n+1 +1) = (n+1)(n+2)$. Is that what we suppose to get for this problem?

No comments:

Post a Comment