lol beware the sinister acorn that is the college board, they'll hunt you down with their college board black hawk helicopters XD they wire tapped every phone and spy on you =P
not supposed to talk about it remember? XD but i love extrema and stuff like that. 1st derivative is slope 2nd is concavity. take first deriv find critical values do interval test or 2nd deriv test! i especially love rotation of graphs
Like anybody cares. Ordinarily that would be easy, but the graph had tons of non-differentiable points and I wasn't sure if extrema could exist there or not.
non differentiable points don't matter, as long as the graph is continuous it a non differentiable point can be an extrema lol you just need to prove the 1st derivative changes from either + to - or - to + and you can do that with either differentiable or non differentiable points