Talk:Strict differentiability

It seems to me that the given definition in the case of a normed vector space is the same as differentiability in the usual sense.

Shouldn't it be rather: $$f(x)-f(y)=L(x-y)+\operatorname{o}\limits_{(x,y)\to(a,a)}(x-y)$$? Pinkrobbit (talk) 23:19, 10 March 2014 (UTC)
 * Agreed. Made the change. --Svennik (talk) 20:38, 12 May 2020 (UTC)