Differentiable Functions

1 C 1 arg:1 , arg:2

A function funf, RealNumbers, RealNumbers is called differentiabledifferentiable at insetx, RealNumbers, iff for all 0ϵ>0 there is a 0δ>0, such that rfracabsvalfx-fy, absvalx-y<ϵ for all absvalx-y<δ.