My question concerns on the one hand a specific inequality and on the other hand a general strategy on how to approach inequalities in general.
Usually I don't have problems using induction in order to prove equalities. But wih inequalities my brain just stops working.
Given $n^2-2n-1>0$ for $n>3$.
I would like to prove that via induction from $n-1$ to $n$.
From here on I just don't have a clue...