Am 08.05.2013 22:43, schrieb WM: > > The function f(x) = x has for every sequence x_n --> x_0 the sequence > of diference quotients > (x_n - x_0)/(x_n - x_0) = 1. The limit is 1 in all cases, and not 0.
Except perhaps for all sequences n -> x_n being constant, x_n = x0, for almost all n.
Its this kind of nonsense logics that make every WM-posting-sequence unique with finitely many exceptions.
On the other hand, that kind of positive thinking is propably standard for many physicists and other applied math plumbers.