4 votes
Accepted

Derivatives near optimal points

Assumption 1 ensures that $x=0$ is a maximum, but perhaps not the only maximum. It is possible that function does not have a 'peak' at 0, but a plateau. E.g.; $$ f(x) = \left\{ \begin{array}{cl} -(x+1)...
user avatar
  • 26.7k

Only top scored, non community-wiki answers of a minimum length are eligible