is not always in , don't you mean (for sufficiently large )
Edit: Assuming you mean take then is differentiable in and it's derivative is continous on ie. F has left derivative at and and right derivative at .
is not always in , don't you mean (for sufficiently large )
Edit: Assuming you mean take then is differentiable in and it's derivative is continous on ie. F has left derivative at and and right derivative at .