Tuesday, 8 April 2014

discrete mathematics - Induction problem: a formula for sumni=1i(i+1)

Find a formula for ni=1i(i+1) and prove that it holds for all n 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

real analysis - How to find limhrightarrow0fracsin(ha)h

How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...